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Why taking vitamin D is ‘Pointless’

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A recent review finds taking supplement does little to prevent chronic disease or early death

Review finds vitamin DA�supplementation does not prevent heart attacks, strokes, cancer, or bone fracturesA�by more than 15%.

Supplements market in Britain worth A?700million a year with most popular pills are multi-vitamins and fish oils containing vitamin D.

Scientists in New Zealand say taking supplement has little effect on health

Scientists claim there is no evidence to support taking vitamin D supplements to stave off chronic disease and early death. Scientists claim there is no evidence to support taking vitamin D supplements to stave off chronic disease and early death – and results of several multi-million dollar trials currently under way are unlikely to alter this view.

A new review examines existing evidence from 40 randomized controlled trials – the gold standard for proving cause and effect – and concludes that vitamin D supplementation does not prevent heart attacks, strokes, cancer, or bone fractures in the general population by more than 15 per cent.

In fact, vitamin D supplements probably provide little, if any, health benefit, according to the study published in The Lancet Diabetes & Endocrinology journal.

In Britain, the supplements market is worth A?700 million a year – a growth of 16 per cent in five years – and the most popular pills are multi-vitamins and fish oils, which contain vitamin D.

Some scientists assumed vitamin D, which is produced naturally by exposure to sunlight, could protect against disease because patients with cancer, heart disease or Alzheimera��s, or who died prematurely, often had very low levels of the nutrient.

However, evidence from some trials suggests that rather than vitamin D deficiency leading to disease, these illnesses stop the body from producing vitamin D – so sufferers have lower levels.

In the latest study, Dr. Mark Bolland of the University of Auckland, New Zealand, and colleagues used several types of review of existing studies, including a a�?futility analysisa��, to predict whether future research results might sway existing evidence.

Some scientists assumed vitamin D, which is produced naturally by exposure to sunlight, could protect against disease because patients with cancer, heart disease or Alzheimer’s.

The results of their study suggest the effect of vitamin D, taken with or without calcium, on heart attacks, strokes, cancer, and total fracture lies below a a�?futility thresholda��.

This means there would be no point in taking supplements as it would have little effect on health outcomes.

For hip fractures, the results of some trials even suggested an increased risk with vitamin D supplementation.

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