When to promote supplement use and when to curb it

A useful guide for addressing frequently asked questions

Doctors should counsel their generally healthy patients that vitamin and mineral supplementation provides little if any benefit beyond a balanced diet, say Harvard preventive health experts.

supplements versus food

They point out that the evidence consistently shows supplementation has no clear benefits for the primary or secondary prevention of chronic diseases not related to nutritional deficiency.

Writing in JAMA, they ote that high doses of some manufactured vitamins are potentially harmful, with recent trials suggesting that exceeding the recommended daily allowance of beta