More than half of American adults take vitamin and mineral supplements, but the USPSTF says that for non-pregnant, healthy adults, these supplements are a waste of money. There is not enough evidence to support the use of supplements to reduce the risk of cancer or cardiovascular disease. Some supplements, such as vitamin E and beta-carotene, may even increase the risk of lung cancer in people with certain risk factors. It is best to focus on getting nutrients from a balanced diet.
The FDA does not approve dietary supplements for safety or effectiveness, and some labels make misleading health claims. Before taking a supplement, it is important to consider the potential risks and speak to a healthcare provider.