D, a vitamina-hormônio da longevidade e da boa saúde

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Observação importante: vitamina D não é “nutriente”, é HORMÔNIO.  A abordagem leiga como “nutriente” compromete o entendimento de sua enorme e insubstituível importância para preservar ou recuperar a saúde.

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“Importante: o medo do câncer de pele não pode servir como desculpa para evitar os raios solares. “Os protetores não impedem que tenhamos uma quantidade adequada de vitamina D”, afirma o dermatologista Marcus Maia, da Santa Casa de Misericórdia de São Paulo, que demonstrou isso em um trabalho finalista do III Prêmio SAÚDE, promovido pela Editora Abril. Fica o recado: tem que tomar sol! Sua saúde vai agradecer.”

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Veja como o sol, principal fonte de vitamina D, pode ajudá-lo a combater o câncer, o diabete e os problemas cardíacos

A gente não cansa de ouvir e ler que a receita para uma vida longa e cheia de saúde deve incluir uma alimentação equilibrada, a prática regular de atividade física, sono em dia e cuca fresca. Hoje, porém, muito cientista sério acrescentaria a essa lista banhos de sol diários. Nem muito extensos nem muito curtos: bastam 15 minutos para que os raios solares ativem no organismo a produção de uma substância capaz de fortalecer os ossos, deixar as defesas em ponto de bala, preservar a massa cinzenta e garantir que o coração bata forte por anos a fio.

d3

Trata-se da vitamina D, uma substância que, com tantas qualidades elencadas nos tempos muito recentes, tem despertado o interesse de pesquisadores de várias áreas – de nutricionistas a bioquímicos. Só para ter uma idéia, o PubMed, biblioteca virtual da medicina, que pertence ao governo americano e armazena artigos científicos de todo o globo, registrou no ano passado mais de mil estudos sobre funções recém-descobertas dessa molécula. E ela é muito mais importante do que se desconfiava.

Um desses trabalhos, que acaba de sair na revista científica Archives of Internal Medicine, revela que níveis adequados de vitamina D esticam mesmo a expectativa de vida. A pesquisa avaliou mais de 13 mil homens e mulheres. Quem estava com taxas insuficientes da substância apresentou um risco de morte das mais variadas causas 26% maior em relação aos indivíduos com altos índices da molécula. “A vitamina D está envolvida em vários processos no organismo, participando inclusive da homeostase, o equilíbrio interno de todas as funções do corpo”, justifica a nutricionista Lígia Martini, da Universidade de São Paulo.

Já uma pesquisa da Universidade da Califórnia em Riverside, nos Estados Unidos, analisou o papel do nutriente em diversos tecidos do corpo, literalmente da cabeça aos pés. Seu autor, o bioquímico Anthony Norman, quis mostrar que os benefícios da vitamina D, que no nosso imaginário ainda é mais associada ao fortalecimento dos ossos, vão muito além desse papel. Não à toa, o professor defende que a recomendação diária vá das atuais 400 UI (unidades internacionais) para 2 mil. “Os valores indicados hoje se baseiam apenas no aporte de cálcio, que a vitamina ajuda a fixar no esqueleto. Mas agora sabemos que a vitamina D atua no sistema imune, no coração, no cérebro e na secreção de insulina pelo pâncreas”, exemplifica Norman a SAÚDE!. Ou seja, para dar conta de tantas tarefas, a dose precisaria ser mesmo maior. Sua argumentação faz sentido. “Atualmente, essa vitamina é considerada um potente modulador das células de defesa”, diz a nutricionista Marianna Unger, doutoranda em nefrologia pela USP. Em outras palavras, estimula a atividade das células imunológicas quando elas precisam entrar em ação. Sem a pitada diária de sol, portanto, ficamos ligeiramente indefesos.
Boas doses de vitamina D são, ainda, sinônimo de peito forte. Isso porque ela controla as contrações do músculo cardíaco, vitais para o bombeamento de sangue. Sem contar que, em níveis desejáveis, mantém a pressão arterial em dia. A razão é simples: inibe lá nos rins a síntese de renina, uma enzima envolvida na secreção de um hormônio que faz a pressão disparar. Por falar em hormônio, a insulina, que bota o açúcar para dentro das células, é mais uma substância que depende da ação adequada da vitamina D. “Ela estimula o pâncreas a produzi-la”, diz Lígia Martini. De quebra, a vitamina torna a insulina mais sensível ao açúcar. Assim, taxas reduzidas podem estar relacionadas à síndrome metabólica, que engloba hipertensão, obesidade, colesterol ruim elevado e resistência insulínica.

No caso do câncer, desconfia-se que a vitamina D regule genes vinculados à proliferação celular na mama, no cólon e na próstata. Esse batalhão genético se encarrega de outra missão: induzir o suicídio de células malignas, a apoptose. “A vitamina também comanda genes que inibem a angiogênese, a formação de vasos que alimentam o tumor”, diz Marianna. Ou seja, age contra o câncer em várias frentes. “Em muitos casos, mulheres com câncer de mama apresentam uma dosagem deficiente de vitamina D”, revela a oncologista Maria Aparecida Koike Folgueira, da USP. E talvez não seja mera coincidência.

O mesmo déficit pode estar por trás de problemas como o Parkinson, que provoca tremores involuntários. Esse elo foi verificado por cientistas da Universidade Emory, nos Estados Unidos. Os portadores do mal tinham uma carência acentuada do nutriente. “A hipótese é que a vitamina D ofereça uma maior proteção aos neurônios ameaçados pelo Parkinson”, conta a neurologista Marly de Albuquerque, da Universidade Federal de São Paulo.

A falta do nutriente talvez se explique pelo fato de a população se expor cada vez menos ao sol, até mesmo no Brasil. Foi o que mostrou um trabalho da nutricionista Marianna Unger. O estudo avaliou 619 indivíduos considerados saudáveis. “Cerca de 80% deles tinham níveis insuficientes de vitamina D após o inverno”, diz a pesquisadora. “Depois do verão, a proporção de indivíduos com carência caiu para 39,6%, índice muito elevado para um país ensolarado como o nosso.”

Importante: o medo do câncer de pele não pode servir como desculpa para evitar os raios solares. “Os protetores não impedem que tenhamos uma quantidade adequada de vitamina D”, afirma o dermatologista Marcus Maia, da Santa Casa de Misericórdia de São Paulo, que demonstrou isso em um trabalho finalista do III Prêmio SAÚDE, promovido pela Editora Abril. Fica o recado: tem que tomar sol! Sua saúde vai agradecer.
No corpo todo

Quando foi descoberta, no início do século passado, a vitamina D só era vinculada à saúde dos ossos. Mas hoje os cientistas sabem que há receptores para essa molécula em 31 áreas do corpo humano (veja a lista completa abaixo). E, quando a natureza cria receptores para determinada molécula, é sinal de que ela é realmente importante para a célula

As 31 áreas em que ela atua

• Cartilagens
• Células produtoras de insulina
• Cérebro
• Coração 
• Desenvolvimento do embrião
• Estômago
• Fígado
• Folículo capilar
• Formação da placenta
• Funcionamento da musculatura
• Glândula supra-renal
• Hipófise
• Inibidores do câncer
• Intestino
• Mamas
• Medula óssea
• Ossos 
• Ovários
• Paratireóide
• Parótida
• Pele
• Próstata
• Pulmões
• Retina
• Rins
• Sistema imunológico
• Tecido adiposo
• Testículos
• Timo
• Tireóide
• Útero
Depois dos 50…
…A vitamina D se torna ainda mais fundamental. Isso porque a partir dessa idade os ossos tendem a se desmineralizar em um ritmo acelerado, aumentando o risco de osteoporose. Além disso, o corpo perde massa muscular, o que favorece a ocorrência de quedas e até de certa dificuldade de locomoção. “O problema é que nessa idade a pele tem uma menor capacidade de síntese da vitamina”, diz Rodolfo Herberto Schneider, geriatra da Pontifícia Universidade Católica do Rio Grande do Sul. Por isso, muitos especialistas preconizam doses mais elevadas da substância, prescrevendo, de acordo com o caso, até mesmo a suplementação.

Fonte:  http://saude.abril.com.br/edicoes/0305/medicina/conteudo_403054.shtml

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Anúncios

Cientistas convocam para uma Ação de Saúde Pública tendo como modelo o uso do Hormônio-Vitamina D

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CIENTISTAS CONVOCAM PARA UMA AÇÃO D*  

[*PROJETO QUE TEM O PROPÓSITO DE SERVIR COMO UM MODELO DE SAÚDE PÚBLICA COM A VITAMINA D] 

A DEFICIÊNCIA DE VITAMINA D É EPIDÊMICA
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Sobre o assunto, assista também: Vitamina D3 – 10.000 UI diárias é vital para à saúde

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Scientists’ Call to D*action
The Vitamin D Deficiency Epidemic

vita d1

40-75% of the world’s population is vitamin D deficient.

The causal link between severe vitamin D deficiency and rickets or the bone disease of osteomalacia is overwhelming, while the link between vitamin D insuffiency and osteoporosis with associated decreased muscle strength and increased risk of falls in osteoporotic humans is well documented by evidencebased intervention studies.

There are newly appreciated associations between vitamin D insufficiency and many other diseases, including tuberculosis, psoriasis, multiple sclerosis, inflammatory bowel disease, type-1 diabetes, high blood pressure, increased heart failure, myopathy, breast and other cancers which are believed to be linked to the non-calcemic actions of the parent vitamin D and its daughter steroid hormone. Based on the evidence we now have at hand, action is urgent.

It is projected that the incidence of many of these diseases could be reduced by 20%-50% or more, if the occurrence of vitamin D deficiency and insufficiency were eradicated by increasing vitamin D intakes through increased UVB exposure, fortified foods or supplements. The appropriate intake of vitamin D required to effect a significant disease reduction depends on the individual’s age, race, lifestyle, and latitude of residence. The latest Institute of Medicine (IOM) report, 2010, indicates 10,000 IU/day is considered the NOAEL (no observed adverse effect level). 4000 IU/day can be considered a safe upper intake level for adults aged 19 and older.

It is well documented that the darker the skin, the greater the probability of a vitamin D deficiency. Even in southern climates, 55% of African Americans and 22% of Caucasians are deficient.

More than 1 billion people worldwide are affected at a tremendous cost to society.

A Scientists’ Call to Action has been issued to alert the public to the importance to have vitamin D serum levels between 40 and 60 nanograms/milliliter (100-150 nanomoles/liter) to prevent these diseases. Implementing this level is safe and inexpensive.

The benefit of an adequate vitamin D level to each individual will be better overall health and a reduction in illnesses and, ultimately, a significant reduction in health care costs. The benefit of adequate vitamin D levels to society/businesses is a more productive workforce and, lower health care costs.

The D*action project has as its purpose to serve as a model for public health action on vitamin D. It is a test bed for techniques, and for providing outcome evaluation at a community level.

http://www.grassrootshealth.net/epidemic

A verdade sobre a Vitamina D: sua carência é promovida por conflito de interesses – The Truth about Vitamin D

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Everyone’s talking about vitamin D right now, especially since the Institute of Medicine’s Food and Nutrition Board (FNB) updated their recommended dietary allowance (RDA) for it.

Há interesses na gestão da Medicina associados com os da Indústria Farmacêutica e não com a preservação da saúde

Há interesses na gestão da Medicina associados com os da Indústria Farmacêutica e não com a preservação da saúde

By Dr. Joseph Mercola
Mercola.com

What if a cure for cancer has been right here all along? What if the very agency charged with protecting your health is the one keeping you from that cure?

 

 

A Lawless, Rogue Agency Out of Control

 

Ten years ago a former New York State assemblyman, Daniel Haley, wrote a scathing exposé on how the Federal Drug Administration (FDA) systematically shuts the door on effective and non-toxic products, many for cancer.

The FDA is the chief agency in charge of protecting and promoting Americans’ health and safety. But in 10 stunning, true stories in his book, “The Politics of Healing,” Haley describes how the FDA has suppressed and banned natural health cures – eight of them for cancer.

He later wrote about two additional cancer cures that worked, which the FDA also disallowed.

The FDA even admitted that one of these treatments, discovered by Dr. Stanislaw Burzynski, was successful with some of the most incurable forms of cancer.

I shared this with you in a recent article that showed his film, but stories like this are far too common, and you can’t help but wonder how many people have died while the FDA denied them cancer treatments that work.

Haley brazenly calls the FDA a rogue, out of control agency that has lied in Congressional testimonies, deliberately falsified data, and destroyed evidence to prohibit cures like Burzynki’s from coming to market. The FDA’s loyalties are to the drug industry, not to individuals, Haley says.

His claims mirror those of Dr. David Graham, who once worked in the FDA’s Office of Drug Safety. In 2004 Dr. Graham blew the whistle on six drugs that were harming people, including Vioxx, but instead of acting on his warnings, Graham’s superiors pulled him off his job.

He fought back in a PBS television special when he told how he’d been chastised at the FDA for thinking the FDA served the public. The “FDA is there to serve the drug industry,” Graham said his supervisors told him.

 

 

‘Virtually Every’ Drug Company Now Targeting Cancer Therapies

 

Today, the FDA continues to serve its client, Big Pharma, by making sure that toxic chemotherapy, along with surgery and radiation, are the only cancer treatment options legally available to you. This industry is huge, with 139 cancer treatment drugs in the pipeline just for women alone.

All told there are over 900 experimental cancer therapies under investigation. No wonder so many pharmaceutical companies are ramping up their cancer drug research!

According to the New York Times:

“Virtually every large pharmaceutical company seems to have discovered cancer, and a substantial portion of the smaller biotechnology companies are focused on it as well. Together, the companies are pouring billions of dollars into developing cancer drugs.”

Note they said drugs, not cures. That’s because this industry isn’t set up for a cure, even though they say that’s what they’re looking for. It’s also why economic forecasts predict 20 million new cancers by 2025, with the $50 billion-a-year cancer treatment business increasing by 15 percent a year. Pfizer alone projects its annual cancer drug returns will be $11 billion by 2018.

The truth is that most Americans are deficient in vitamin D, and studies show that vitamin D supplementation can both prevent and kill many infections and diseases, including cancer.

Vitamin D isn’t actually a vitamin, although scientists refer to it as such. It’s actually a steroid hormone that you get from sun exposure, food sources and/or supplementation.

The term refers to either vitamin D2 or D3, but according to the National Vitamin D Council, D3 (chemical name 25-hydroxy vitamin D) is real vitamin D, and is the same substance produced naturally through your skin by sun exposure.

Older research appears at odds on whether your body cares which form of D it’s getting. But a study in the January 2011 Journal of Clinical Endocrinology & Metabolism found that D3 is 87 percent more effective than D2, and is the preferred form for treating vitamin D deficiency. It’s measured in international units (IU’s) in nanograms per milliliter, or ng/mL.

The Vitamin D Council believes that a person’s D3 levels should be at least 50 ng/mLfor your body to function properly. (To determine whether you might be deficient, you need to get your vitamin D levels tested, and ideally, you’ll want to get tested regularly thereafter to ensure you’re maintaining optimal levels year-round.)

Fourteen famous vitamin D researchers gave the FNB this information, but the FNB apparently ignored the information that the researchers presented because their “updated” RDA levels ended up being so pitifully low that it’s doubtful it can significantly impact Americans’ deficiency, let alone fight off diseases like cancer and heart disease.

 

 

Experts Protest ‘Impossible’ New RDA Levels

 

Depending on your age, the new recommendations are 600 to 800 IUs a day for adults and between zero and 600 IUs a day for children. The FNB also said that taking vitamin D in amounts of 10,000 IUs or more could be dangerous – but that’s ridiculous, seeing that a 30-minute dose of sunshine can give an adult more than 10,000 IUs!

Since countless studies indicate that much higher levels of vitamin D are required for optimal health, it’s no surprise that experts lost no time denouncing the FNB’s recommendations.

“It’s almost impossible to significantly raise your vitamin D levels when supplementing (at the FNB levels),” the Vitamin D Council posted on its website.

 

 

Hidden Agendas and Conflicts of Interest

 

Suspecting that conflicts of interest and hidden agendas played a part in this, the Vitamin D Council filed Freedom of Information (FOIA) requests so they could examine the FNB’s notes on the process.

They’re still waiting on an answer, but I’m wondering if it doesn’t have something to do with the fact that over 1,350 clinical trials on vitamin D are currently being conducted by major drug companies, all based on the prevention or cure of many illnesses and diseases, including 388 for cancer.

Yes, cancer.

From breast to prostate, to colorectal to brain cancers, and even basal cell carcinoma (skin cancer), Drug companies such as Pfizer and Merck are currently either sponsoring or collaborating on clinical trials based on the premise that vitamin D administered orally, intravenously or topically (for skin cancer) may either prevent or cure cancer.

Cancer foundations and institutes are all in on the clinical study game as well, such as the National Cancer Institute and the National Institutes of Health. Even the U.S. Department of Defense and the Department of Veteran Affairs are studying ways to prevent and cure cancer with vitamin D!

What’s really interesting is that several of these studies are using vitamin D in amounts of 50,000 IUs a day or more – which flies strongly in the face of the FNB’s claims that self-supplementing with 10,000 could be dangerous to your health.

Since recent studies show that supplements of up to 40,000 IUs a day don’t appear to be toxic, and that doses as low as 400 IUs a day are too low to even maintain skeletal health, let alone prevent cancer.

 

 

The FDA’s Definition of Drug vs. Supplement

 

Over 800 studies already show that vitamin D could have cancer-prevention and/or treatment possibilities. But the problem is that it’s a natural substance that can’t be patented as a simple supplement, meaning there’s no real revenue in it, compared to a prescription brand drug.

That’s why many drug studies involving vitamins of any kind hinge on how the FDA defines drugs and supplements.

A drug is defined as a product meant for the diagnosis, cure, mitigation, treatment, or prevention of a disease.

A supplement is defined as a product that is meant to simply “supplement” or “enhance” a normal diet within the daily allowances recommended by the FDA. Drugs – and retailers who sell supplements are not allowed to tell you that vitamin D can possibly “prevent, mitigate or cure” cancer without having the FDA accuse them of selling a drug that hasn’t been approved through the proper FDA process.

 

 

Again, Follow the Money if You Want to Know the Truth

 

That process of getting a drug to market costs an average $359 million and takes nearly 10 years– with a good portion of the money going directly to the FDA through user fees. Over the years these fees have become a major funding source for the FDA. What drug companies get in return is faster FDA reviews and drug approvals.

Doenças que já têm cura ou prevenção são mantidas por interesses contrários aos da saúde

Doenças que já têm cura ou prevenção são mantidas por interesses contrários aos da saúde

 

As a result, a kind of you-scratch-my-back-I’ll-scratch-yours scenario has ensued, with drug companies maintaining major leverage over the FDA when it comes to protecting their revenue sources, including making sure the $60 billion-a-year supplement business doesn’t get in the way of drug sales.

The history of FDA laws and regulations on file at Harvard Law School, explains how years ago an FDA task force long ago established this policy

“… to ensure that the presence of dietary supplements on the market does not act as a disincentive to drug development.”

So how does this relate to too-low RDA levels for vitamin D?

A look at the clinical trials shows that most of them involve “high-potency” D3 supplements, which puts them in the drug category if it turns out they can mitigate, treat or cure cancer. And that means they can be patented – and sold to you as prescriptions at sky-high prices.

 

 

Drug Companies Are Elbowing Their Way into Your Healthcare Plan

 

Another way that Big Pharma has moved in on the cancer industry is through pharmacy benefit managers (PBMs), which administer drug benefits for about 95 percent of all patients with prescription drug coverage.

PBMs decide which drugs flow through the healthcare system. Supposedly they choose the best drugs and prices for your plan. But what if I told you that the businesses that sell the drugs have been helping to decide which drugs your PBM pays for?

Regulators have been working hard to nip conflicts of interest in the bud, but over the years numerous court cases have shown that drug companies and PBMs working together has led to higher prices and limited drug choices – and allegations of price-setting through secret deals with pharmaceutical companies.

 

 

Official Agencies Wedded to Toxic Chemotherapy

 

I have an employee who was diagnosed with breast cancer last year. After her mastectomy, she was told she had several months of chemotherapy and radiation ahead of her. But she sought a second opinion at a renowned cancer treatment center – and learned that chemotherapy was NOT going to be part of her treatment plan because her type of cancer doesn’t respond to chemotherapy.

“And since chemo is poison, why would we want to poison you for no reason?” the oncologist told her.

That’s right – a person in the business of “selling” cancer treatment actually said he wasn’t going to poison her “for no reason” – something I consider unusual in an industry that is wedded to toxic chemotherapy.

The employee was pronounced cancer-free four months later, without chemo or radiation, which may leave you wondering, as it did me, how many patients die every year from toxic chemotherapy they got but didn’t need?

Some experts believe that as much as 25 percent, or more, of patients who undergo chemotherapy are killed by it. Dr. Vincent Speckhart, a former U.S. Air Force flight surgeon and oncologist, was so concerned about deaths from chemo that he told a Congressional committee:

“After 13 years of using FDA-approved chemotherapy protocols, I concluded that such therapies were extremely toxic, poorly tolerated, and not effective in prolonging survival in most solid tumors of adults. In 1983, my patients began to request therapies other than chemotherapy. I agreed, and without even knowing it, I became an ‘alternative practitioner’ and was red-flagged by opponents of this form of therapy.”

In other words, if you’re a physician who divorces the status quo of cancer treatment, you’d better watch out.

In his book, Haley talks about how this “gross government intrusion into the healing arts,” costs thousands – and perhaps millions – of lives and facilitates the drug industry by squelching people like Dr. Speckhart and Burzynski.

 

 

Arm Yourself with Knowledge to Protect Your Healthcare Freedom

 

It doesn’t help that the FDA as well as other “official cancer medicine” agencies have a swinging door of employees going back forth between the agency and Big Pharma to work.

In a new book, “National Cancer Institute and American Cancer Society: Criminal Indifference to Cancer Prevention and Conflicts of Interest,” former Cancer Prevention Coalition president Dr. Samuel S. Epstein shows just how bad the conflicts are.

Quoting former NCI director Samuel Broder, Epstein says “the NCI has become a government pharmaceutical company.” And the ACS, Epstein says, is more interested in “accumulating wealth than saving lives.”

With close ties to cancer treatment businesses, the ACS has a track record that “clearly reflects conflicts of interest” when it comes to cancer treatment policies and prevention strategies, Epstein alleges.

And so it goes… So, what you can do to protect yourself from getting cancer, or what can you do if you already have it? The good news is that knowledge is power, and there are things you can do for yourself, right now, not to only to prevent cancer, but to make sure you have the right cancer treatment if you do get it.

Because cancer is almost wholly a man-made disease, it’s especially important to recognize that you do have power over many things that could cause you to get cancer. Taking control of your health will put you in a position to make the best health decisions possible if you do get cancer.

 

Here’s a list to get you started on a cancer prevention plan:

  1. Normalize your vitamin D levels with safe amounts of sun exposure. This works primarily by optimizing your vitamin D level. Ideally, monitor your vitamin D levels throughout the year.
  2. Control your insulin levels by limiting your intake of processed foods and sugars/fructose as much as possible.
  3. Get appropriate amounts of animal-based omega-3 fats.
  4. Get appropriate exercise. One of the primary reasons exercise works is that it drives your insulin levels down. Controlling insulin levels is one of the most powerful ways to reduce your cancer risks.
  5. Eat according to your nutritional type. The potent anti-cancer effects of this principle are very much underappreciated. When we treat cancer patients in our clinic this is one of the most powerful anti-cancer strategies we have.
  6. Have a tool to permanently erase the neurological short-circuiting that can activate cancer genes. Even the CDC states that 85 percent of disease is caused by emotions. It is likely that this factor may be more important than all the other physical ones listed here, so make sure this is addressed. My particular favorite tool for this purpose, as you may know, is the Emotional Freedom Technique.
  7. Only 25 percent of people eat enough vegetables, so by all means eat as many vegetables as you are comfortable with. Ideally, they should be fresh and organic.Cruciferous vegetables in particular have been identified as having potent anti-cancer properties. Remember that carb nutritional types may need up to 300 percent more vegetables than protein nutritional types.
  8. Maintain an ideal body weight.
  9. Get enough high-quality sleep.
  10. Reduce your exposure to environmental toxins like pesticides, household chemical cleaners, synthetic air fresheners and air pollution.
  11. Reduce your use of cell phones and other wireless technologies, and implement as many safety strategies as possible if/when you cannot avoid their use.
  12. Boil, poach or steam your foods, rather than frying or charbroiling them.

You also can help by voicing your opposition to the FDA’s censorship of alternative cancer treatments by sending a letter to your Congressional representatives and asking them to support H.R. 1364, a bill to amend the Federal Food, Drug, and Cosmetic Act concerning the distribution of information on legitimate scientific research in connection with foods and dietary supplements.

Call or write your Congressman now, and stop the censorship of your right to alternative cancer therapies and possibly a cure.

Sponsored Link: The FDA is moving to BAN most natural health supplements. – Get them while you still can! Wellness Resources – High Quality Nutritional Supplement(Ad)

Fonte: http://theintelhub.com/2011/08/05/the-stunning-effect-of-this-single-vitamin-on-cancer/

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“O que você não sabe sobre a Vitamina do Sol. Ela continua a surpreender a medicina com novos efeitos benéficos”

A Revista Veja desta semana tem como matéria de capa o assunto Vitamina D.   Ed. 2.304, de 16 de janeiro de 2013: “O que você não sabe sobre a Vitamina do Sol. Ela continua a surpreender a medicina com novos efeitos benéficos.

capa1n_veja

Para receber as informações mais atualizadas sobre este hormônio-vitamina D, cadastre-se, curtindo a página:

Vitamina D é um hormônio vital para preservação e recuperação da saúde

https://www.facebook.com/VitaminaD.HormonioVital

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Na COLUNA DA ESQUERDA deste site está situado em último lugar a categoria “VITAMINA D”.  Entrem ali e terão acesso às principais publicações, vídeos e programas feitos sobre esta vitamina-hormônio.  Ou apenas cliquem no link que dá acesso direto a todas elas:

 https://biodireitomedicina.wordpress.com/category/vitamina-d/

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No meu canal do YouTube, todo o material de áudio, vídeos e programas sobre Vitamina D3 podem ser acessados neste endereço:

Vitamina D3 – 10.000 UI diárias é vital para preservar à saúde

https://www.youtube.com/playlist?list=PL301EAE2D5602A758

Celso Galli Coimbra – OABRS 11352
cgcoimbra@gmail.com
 
Related articles

Deficiência de vitamina D na gravidez eleva risco de esquizofrenia – Low vitamin D in newborns linked to schizophrenia

Age-standardised disability-adjusted life year...

Age-standardised disability-adjusted life year (DALY) rates from Schizophrenia by country (per 100,000 inhabitants). (Photo credit: Wikipedia)

Duas matérias, a primeira em português, outra a seguir em inglês.

Deficiência de vitamina D na gravidez eleva risco de esquizofrenia, diz cientista australiano

Nos últimos sete anos, o biólogo Darryl Eyles, diretor do laboratório de neurobiologia do Centro de Estudos em Saúde Mental de Queensland (Austrália), coordenou uma pesquisa sobre o impacto da deficiência de vitamina D na gestação no desenvolvimento da esquizofrenia –distúrbio caracterizado por sintomas como alucinações, cujas causas ainda são pouco compreendidas pela ciência.

Mães e Filhos

Os resultados da pesquisa foram apresentados no seminário “Origens Desenvolvimentistas da Saúde e da Doença”, realizado no Instituto da Criança do Hospital das Clínicas da USP (Universidade de São Paulo), nos dias 25 e 26 de setembro, em São Paulo. Na ocasião, Eyles deu a seguinte entrevista à Folha.

Folha – Por que a associação entre vitamina D e esquizofrenia?

Darryl Eyles – A hipótese surgiu com um dado dos estudos epidemiológicos. A maioria dos pacientes com esquizofrenia nasceu nos meses de primavera e inverno, quando diminuem os níveis de vitamina D no organismo da mãe.

Folha – Como foi feita a pesquisa?

Eyles – Foi um estudo em animais, para ver se os que nasceram de mães com deficiência de vitamina D tinham alterações na morfologia do cérebro relacionadas à esquizofrenia. Quando não houve privação da vitamina, ou quando ela ocorreu só no primeiro trimestre da gestação, não se observou sinais do distúrbio, mas a deficiência no final da gestação provocou alterações no cérebro. Os resultados foram iguais em testes comportamentais.

Folha – A pesquisa limitou-se aos animais?

Eyles – Partimos de dados populacionais, mas os testes foram feitos em animais. Há uma parte da pesquisa, ainda em andamento, com humanos. Na Dinamarca, estamos recolhendo amostras de sangue de recém-nascidos, e pretendemos acompanhar o aparecimento de distúrbios na vida adulta.

Folha – Se a hipótese for confirmada, o que pode ser feito?

Eyles – Para saber se uma intervenção com vitamina D durante a gestação pode prevenir eventos futuros, precisamos de grandes estudos, que ainda não foram feitos. Mas acho que pode ser uma saída. Há um trabalho no Canadá sustentando que a suplementação na gestação pode prevenir defeitos no feto.

Folha – Como seria feita essa suplementação?

Eyles – Em termos de desenvolvimento neurológico do feto, deveria ser feita a partir do segundo trimestre da gravidez.

Folha – É possível suplementar o bebê após o nascimento?

Eyles – Suplementar a mãe é o modelo. Mas creio que há uma “janela” entre o terceiro trimestre da gestação e o primeiro ano de vida que, arrisco dizer, pode ser usada para prevenir problemas neurológicos.

Folha – Em países tropicais, a exposição ao sol garante os níveis de vitamina D?

Eyles – Fizemos uma pesquisa epidemiológica na Austrália, incluindo regiões de clima tropical e de clima temperado. Observamos que em ambas ocorre deficiência de vitamina D no inverno. Há vários fatores que influem na exposição ao sol, como os hábitos urbanos e o uso de bloqueadores solares.

Fonte: Folha On Line
http://www.west1.com.br/news.php?recid=1862

cisne-negro-1

Cisne Negro

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MARTIN MITTELSTAEDT
The Globe and Mail
Published Thursday, Sep. 09 2010, 2:30 PM EDT
Last updated Thursday, Aug. 23 2012, 4:25 PM EDT

The cause of schizophrenia has long baffled doctors, but a tantalizing clue has emerged that some cases of the debilitating mental disorder are linked to having too little vitamin D during fetal development and early in life.

Researchers studying schizophrenia cases in Denmark have discovered that newborns with the lowest level of the sunshine vitamin in their blood at birth had about twice the risk of developing the disease when they became adults, compared to those with moderate amounts.

In some countries, milk and cereal grains are ...

Vários países fortificam os alimentos com Vitamina D para prevenir doenças

The finding suggests it may be possible to reduce the incidence of the illness by having babies and pregnant women either take the vitamin, or increase their exposure to sunshine, the natural way of making the nutrient.

“The study opens up the possibility that improving vitamin D levels in pregnant women and newborn babies could reduce the risk of later schizophrenia,” observes John McGrath, director of the Queensland Centre for Mental Health Research, one of a team of Australian and Danish researchers who conducted the investigation.

A paper on the findings appeared earlier this week in Archives of General Psychiatry. The research is the first to link neonatal vitamin D levels and the brain disease.

Schizophrenia is a severe mental illness in which people often experience hallucinations and hear voices. It typically develops in young adults, around the age of 20, and causes a lifetime of symptoms that sometimes can be controlled through medications.

It’s thought that the disease lies dormant until after puberty, when changes in the brain allow symptoms to break through and become apparent.

Researchers have long scratched their heads over why some people develop the disease, which affects an estimated one person out of 100 in Canada. Previous studies have found it’s more common in children born to older fathers, for instance, as well as among those living in urban areas, and in non-white immigrants to northern latitude areas.

But one previously identified risk factor has hinted at an insufficiency of vitamin D: the time of year a child is born. Children with winter births, when mothers’ vitamin D levels are typically low because of the lack of exposure to strong sunlight, have about a 10-per-cent higher risk of schizophrenia than those born at other times of the year. Fetuses depend entirely on their mothers for the nutrient.

For winter births, this seasonal fetal vitamin D famine occurs during the last stages of pregnancy, a time when brain development is very rapid and the lack of a key nutrient could have a major impact. The new research is an important breakthrough because it tracked actual vitamin D levels in children, rather than the inferred amounts from the season of birth.

Previous experiments by Dr. McGrath have found that pregnant rats deprived of vitamin D give birth to pups with altered brain development. One possible link to schizophrenia suspected by the researchers is that too little vitamin D before birth alters the brain’s dopamine system, an important chemical factor influencing mood and other mental processes.

The research on newborns was based Denmark’s vaunted Newborn Screening Biobank, which has collected dried blood samples from all children born in the country since 1981. Vitamin D levels in the blood were compared in 424 people, ranging in age from 16 to 29, who had developed schizophrenia and an equal number of so-called controls who had not. These comparisons found the excess risk among those with low levels.

A paradoxical finding in the research is that the babies with the highest amounts of vitamin D also had an elevated risk of the mental disease, at first glance suggesting that both too little or too much of the nutrient might be a bad thing when it comes to schizophrenia.

But Dr. McGrath played down this possibility and said there may be a subgroup of the population that has difficulty metabolizing vitamin D into the form used by cells, causing levels of the nutrient to build up in their blood. These individuals would consequently have cells experiencing shortages, while simultaneously having high blood levels awaiting to be converted.

Dr. McGrath said the possibility that there is a vitamin D resistant part of the population is “pure speculation,” and needs to be confirmed by more research into genetic differences in the way people metabolize the nutrient.

Fonte:  http://www.theglobeandmail.com/life/health-and-fitness/health/conditions/low-vitamin-d-in-newborns-linked-to-schizophrenia/article4268128/
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Metabolismo da vitamina D no organismo

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Existem duas formas básicas de vitamina D: colecalciferol (vitamina D3) e ergocalciferol (vitamina D2). Ambas podem ser obtidas através de alimentos ou suplementos vitamínicos. A vitamina D3, porém, pode também ser produzida pelo nosso corpo. Através do colesterol que é consumido nos alimentos, conseguimos obter uma substância chamada 7-dehidrocolesterol. Este colesterol se deposita nas células da pele e, quando exposto à luz solar (raios UV-B), se transforma colecalciferol (vitamina D3).

Vitamina D

Tanto o colecalciferol (vitamina D3) quanto o ergocalciferol (vitamina D2) são formas inativas da vitamina D. Para que a vitamina D possa exercer seus efeitos no organismo, mais duas metabolizações são necessárias.

O processo se dá da seguinte maneira: as vitaminas D3 e D2 obtidas na alimentação e/ou exposição solar são transportadas para o fígado, onde serão transformadas em calcidiol (25-hidroxivitamina D). O calcidiol é a forma que o corpo usa para armazenar a vitamina D. Por isso, quando queremos saber se o paciente tem níveis adequados de vitamina D no corpo, dosamos no sangue os níveis de 25-hidroxivitamina D (25OH vit D).

Quando o organismo sente necessidade de agir sobre os níveis de cálcio do sangue e dos ossos, uma parte desta 25-hidroxivitamina D é transportada até o rins, onde sofrerá o último processo de metabolização, transformando-se em calcitriol (1,25-hidroxivitamina D), esta sim a forma ativa da vitamina D.

Portanto, resumindo, a obtenção e ativação da vitamina D podem seguir dois caminhos:

Fonte: http://www.mdsaude.com/2013/01/vitamina-d.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+mdsaude+(MD.Saude)

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Maior acesso a suplementos de vitamina D pode “eliminar casos de raquitismo” – Greater access to vitamin D supplements would ‘cut the cases of rickets’

Vitamins

Vitamins (Photo credit: DBduo Photography)

Royal College of Paediatrics and Child Health (RCPCH) considera que a deficiência de vitamina D afeta um quarto das crianças, resultando em altas incidências de diabetes, tuberculose, esclerose múltipla e raquitismo.

According to the Royal College of Paediatrics and Child Health (RCPCH), vitamin D deficiency is thought to affect a quarter of children, resulting in higher incidences of diabetes, tuberculosis, multiple sclerosis and rickets.

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Katy Morton, 14 December 2012, 12:15pm

The Royal College of Paediatrics and Child Health has called for vitamin D supplements to be made more widely available to children.

According to the Royal College of Paediatrics and Child Health (RCPCH), vitamin D deficiency is thought to affect a quarter of children, resulting in higher incidences of diabetes, tuberculosis, multiple sclerosis and rickets.

While the Government’s Healthy Start programme provides vitamins free to low-income families and at risk groups, Professor Mitch Blair, officer for health promotion at the RCPCH, has claimed that the vitamins are in short supply and uptake is low.

In light of this, the RCPCH has today (Friday) launched a campaign calling for high quality vitamin D supplements to be readily available at a low cost, something which is already happening in some countries says Prof Blair.

It follows a recommendation by the chief medical officer for England, Dame Sally Davies, in January that all women who are pregnant or breastfeeding and children aged six months to five-years-old take vitamin D supplements.

The RCPCH’s campaign also recommends an investigation into the pros and cons of further fortification of food with vitamin D, and increasing public awareness by providing clear information for parents and families on the warning signs of vitamin D deficiency and how to prevent it.

Prof Mitch Blair (pictured) said, ‘We know vitamin D deficiency is a growing problem and research reveals startling high levels of vitamin deficiency among certain groups including children.

‘It is only possible to get a fraction (10 per cent) of the recommended daily amount of vitamin D  through  food   and very little from sunlight. So getting out in the sun more or eating more oily fish isn’t going to solve the problem.

‘Lack of vitamin D is related to a plethora of serious illnesses  in children that could be prevented through relatively simple steps such as taking supplements.’

He added, ‘Equally as important is making sure that all healthcare professionals can spot the signs of vitamin D deficiency in children; aches and pains, poor growth, muscle weakness and seizures – and make sure they get appropriately treated.

The first stage of the RCPCH campaign will see a series of leaflets for paediatricians and other healthcare professionals highlighting the signs of vitamin D deficiency, which will be published in the spring.

The Scientific Advisory Committee on Nutrition is currently looking into proposals for further vitamin D fortification of food and drink, which already happens in countries including the United States, Canada and Finland.

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