![]() Chan School of Public Health in Cambridge, Massachusetts. "Buyer beware,” warns JoAnn Manson, DrPH, MPH, MD, the chief of the division of preventive medicine at Brigham and Women’s Hospital in Boston and a professor of epidemiology at the Harvard T.H. ![]() Furthermore, the data showed that people who took in adequate amounts of magnesium, zinc, and vitamins A and K had a lower risk of death - but only if they got those nutrients from food rather than supplements. ![]() Other research published the same year, involving self-reported dietary habits from a group of Americans, linked daily doses of more than 1,000 milligrams (mg) of calcium to a higher risk of death from cancer (though the National Cancer Institute notes that other studies suggest the opposite). The same went for dietary changes, except for a low-salt diet. For example, a systematic review published in the August 2019 Annals of Internal Medicine analyzed the potential effects of nutritional supplements on cardiovascular health, mainly heart attack and stroke, and found that few supplements help prevent heart disease - only omega-3 fatty acids and folic acid were effective. Used properly, some supplements may improve your health, but others can be ineffective or even harmful. Consumers can use the directory to look up ingredients used in products marketed as dietary supplements and find out what the FDA has said about that ingredient and whether the agency has taken any action pertaining to the ingredient.Īccording to the FDA, more than half of Americans take herbal or dietary supplements daily, with a report by Grandview Research noting the dietary supplements market was valued at $151.9 billion worldwide in 2021. In March 2023, the FDA unveiled its new Dietary Supplement Ingredient Directory, a web page intended to help the public stay informed about the ingredients used in dietary supplements. In other words, the regulation of dietary supplements is much less strict than it is for prescription or OTC drugs. It’s up to manufacturers to ensure that their products do not contain contaminants or impurities, are properly labeled, and contain what they claim. Food and Drug Administration (FDA) is not authorized to review dietary supplements for safety and effectiveness before they are marketed. While it’s true that vitamins and minerals are essential to health, it’s not true that taking them in pill, capsule, or powder form - especially in megadoses - is necessary or without risks.įor one thing, dietary supplements can sometimes interact with each other, as well as with over-the-counter (OTC) and prescription medication. ![]() The greatest risk seems to be with bodybuilding and weight-loss supplements, according to the report, which was published in the journal Hepatology by Victor Navarro, M.D., a liver expert at Einstein Medical Center in Philadelphia, and colleagues.When it comes to supplements, there’s so much hype about their potential benefits that it can be hard to separate fact from fiction. (That likely underestimates the extent of the problem, since the network tracks only severe cases of liver damage caused by drugs and supplements, and some cases may go unreported.) Roughly 700 cases of liver damage were reported to the program during the period of the study 130 of those cases were linked to dietary supplements. Researchers looked at cases of liver damage reported to the Drug Induced Liver Injury Network, a program funded by the National Institutes of Health. The study also found that injuries linked to those supplements are rising fast, jumping from just 7 percent of all drug-induced liver injuries in 2004 to about 20 percent in 2014. You've probably heard that too much alcohol or excessive amounts of certain medications can damage your liver, an organ that helps your body extract the nutrients it needs from food and eliminate toxic substances from your blood.īut a new review suggests that many herbal remedies and dietary supplements can also harm the liver, including some that you can easily buy online or over-the-counter in drug or health food stores.
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