
There’s not a lot of evidence they do any good, but that doesn’t stop us. What we’re really buying is not protection from illness, but a sense of wellbeing – the illusion that we’re doing a bit extra over what nature can do, and that makes us feel satisfied. Health experts know it’s all a bit of a con, but they keep fairly quiet about it – mainly because the prevailing belief is they don’t do any harm, as long as the dosage is moderate, and if people want to buy the illusion of wellness in a capsule, well it’s their money.
But that’s about to be turned on its head after a sophisticated analysis of vitamin studies done by Danish researchers and published in the latest Journal of the American Medical Association.
These researchers looked at clinical trials involving the common antioxidant vitamins beta carotene, vitamin A, vitamin C (ascorbic acid), vitamin E, and selenium either singly or in combinations. They looked only at well-designed studies – ones that compared groups of people taking vitamins, single or in combinations with other vitamins – and compared them to similar groups taking a placebo or taking nothing. The researchers were looking for any evidence of an increase in death from any cause in those taking vitamins. There were 68 trials from all over the world, totalling 232,606 people – some healthy, others with specific health problems (but not seriously ill people).
They discarded some trials which they regarded as unreliable. Amongst the rest, they found there was a significantly increased risk of death in people taking some vitamins – alone or in combinations. Vitamin A increased mortality risk by 16 per cent. Vitamin E upped the risk by four per cent and beta carotene seven per cent. Selenium and vitamin C didn’t show any increased risk (and selenium actually seemed to lower the risk of death).
Full story here.