Suplementos de Cálcio?

... e cancro?
https://www.independent.co.uk/life-style/calcium-supplement-cancer-risk-death-study-health-a8861041.html

Citando:
"Writing in the journal Annals of Internal Medicine, the scientists said people could be putting themselves at risk by taking calcium supplement doses higher than 1,000 milligrams per day."
(...)
"In addition, there was evidence that unnecessary consumption of vitamin D supplements by individuals who were not deficient in the vitamin - which helps regulate the amount of calcium and phosphate in the body - might increase the risk of death from any cause."

Licopeno (em suplementos) ajuda a recuperar artérias danificadas

Um estudo confirma (apesar do mecanismo ainda não estar bem compreendido) a acção benéfica do licopeno (presente no tomate, ketchup) mesmo em suplementos:
https://www.theguardian.com/science/2014/jun/09/tomato-extract-lycopene-relieves-damaged-arteries-cambridge-study

Citando:
"A substance found in tomatoes relieves impairment of blood vessels, which may explain why people who eat a Mediterranean diet have a notably reduced incidence of cardiovascular disease, according to a study.

A supplement of lycopene, a powerful antioxidant which is 10 times more potent than vitamin E, improved and normalised function of the endothelium (the inner lining of blood vessels) in volunteers with cardiovascular disease, researchers from the University of Cambridge found."
(...)
Lycopene is found in tomatoes and its potency appears to be enhanced when it is consumed pureed, in ketchup or in the presence of olive oil. It is also found in other fruit and vegetables, such as grapefruit, watermelon, asparagus and carrots."

História da "Vitamina" D e necessidade ou não da suplementação

Depois das notícias (p.e. da Time) sobre como evitar constipações (R: Tomando vitamina D), algumas críticas à recomendação e um pouco de história:
https://www.theatlantic.com/health/archive/2017/02/definitive-vitamin-d/517302/

Citando:
"The scientific process behind the health claims was ethically fraught, too, in that it came from University of Wisconsin researchers who owned the patent on producing the compound that had recently been named “vitamin D.” The term started as a colloquialism for what chemists know as cholecalciferol and ergocalciferol, which are not structurally or functionally similar to the other compounds widely known as “vitamins.”

D is technically a pre-hormone involved in multiple metabolic processes but mainly known to affect the levels of calcium and phosphorus in our bodies. Though little was known in the 1930s about exactly how “vitamin D” worked to prevent people’s bones from warping, the biochemist who patented the process of synthesizing the compound said, “If the public should demand vitamin D in its beer, there is no reason why [we] should not provide it.”

The demanding people weren’t ready for vitamin beer, apparently, and Schlitz took it off the market two years later. Instead cow’s milk became the delivery vehicle for vitamin D supplements in the United States. A milk-fortification law was passed to combat the scourge of rickets. So arose the belief that drinking cow’s milk was necessary for strong bones. As the dairy industry made the case in government-sponsored advertising, vitamin D actually became a primary selling point for milk—the reason that many Americans believe drinking cow’s milk is necessary still today. (Even though adult cows don’t drink it.)"

Médico insinua que Vitaminas são uma boa maneira de fazermos xixi caro

Sem papas na língua (mas também não sei se completamente com razão) médico com responsabilidades na Austrália insinua que, num país com acesso a uma alimentação equilibrada (frutas e legumes) as vitaminas e os minerais (em suplementos) são dispensáveis e só nos fazem "mijar caro":
http://www.independent.co.uk/life-style/health-and-families/health-news/multivitamins-expensive-urine-waste-of-money-vitamins-australian-medical-association-chief-michael-a7578961.html

Números da indústria (citando):

"Nearly half of adults in the UK take multivitamins, with 46 per cent saying they use them daily or occasionally, according to Mintel.

In Australia, the vitamin pill market has doubled over the last decade and seven out of every ten people take some form of supplement, reported ABC.

Industry bodies have said the tablets are useful because many people have poor diets (...)"

Citando:

"“Many of these products have 50 or more ingredients,” he said. “It really is crazy stuff."

"If that’s what you want to do, and you want to give some profits to the companies that produce those products, well good on you. That’s not what I want to do.”"

RECURSO: Examine.com | Independent Analysis on Supplements & Nutrition

Independent Analysis on Supplements & Nutrition | Examine.com


Citando:

"What is Examine.com? We were frustrated.
There was no place we could turn to in order to get unbiased information on supplements. Sure, there was Wikipedia, but it wasn’t getting deep into the science. Everyone else? Had an agenda. Supplement companies misrepresenting science. Media sensationalizing headlines. Companies and individuals pushing unneeded supplements and other products onto you.

That’s why Examine.com started in 2011. Fully independent from the start, we’ve never sold any supplements. Or done any coaching or consulting. Or any kind of advertising or sponsorship.
Our goal from day 1 has always been: read the research, make sense of it, and put it online. We’re an education company that looks at the research — nothing more, nothing less.

And that’s why we’re the trusted brand. We have an entire team, from medical doctors to researchers to professors to pharmacists. Collectively, we come to a consensus that you can trust.

That’s why we’re here. We do the hard work for you."