If you've been blamed for giving Mom gray hair, here's what not to give her this Mother's Day: a bottle of Go Away Gray, a supplement that claims to "prevent and reverse gray hair" via a daily dose of catalase, an enzyme produced by hair cells that naturally declines with age.

I recently got a question from a woman who wondered why she should sign up for Medicare Part B, which covers doctor bills and other kinds of outpatient treatments, since she is in great shape and gets most of her care from a doctor who practices natural medicine. And I got another question from a man who said he didn't want to sign up for Medicare Part D, which covers drugs, because he doesn't spend much on medication. My opinion: Both people are courting disaster. Here's why.

Acupuncture may go more mainstream now that new research shows that it provides modest but statistically significant benefits over both standard care and placebo for patients with chronic pain.

Vitamin D is essential for bone growth and maintenance, and it might help reduce the risk of various diseases. But most people don't consume anywhere near the recommended daily allowance (RDA) of the vitamin from food sources, a problem that might be partially remedied by bumping up intake of vitamin D-fortified cereal and milk, according to a new study in the Journal of Food Science.

Many dietary supplements, especially those that claim to enhance male sexual performance, are spiked with prescription drugs. That's one of the conclusions of our new report on 10 surprising dangers of vitamins and supplements.

Under threat of a lawsuit from the nonprofit Center for Science in the Public Interest, healthcare giant Pfizer has agreed to remove claims related to breast and colon health from some of its Centrum brand multivitamins, and to tone down certain other claims that the CSPI alleged are misleading.

Q. What is choline, and should I be taking a supplement of it?

Meditating for as little as four weeks can make your brain work better. At least, that's what a new study in the Proceedings of the National Academy of Sciences suggests.

About 10 percent of the U.S. population has nutritional deficiencies--mostly for vitamins B6, D, and iron--according to a report released Monday by the Centers for Disease Control and Prevention.

A new study has found potentially harmful chemicals, such as asthma-related compounds and endocrine disruptors, in common consumer products including cosmetics, household cleaners, and personal care products, and many of the detected chemicals are not listed on product labels.

Integrative medicine, which combines conventional care with complementary and alternative therapies, has become an established component of some healthcare systems, hospitals, and medical and nursing schools. This according to a survey of 29 U.S. integrative medicine programs, treating a total of about 19,200 patients each month. The survey was conducted by the Bravewell Collaborative, a nonprofit foundation dedicated to advancing integrative medicine through education, research, and practice.

A recall of RegenArouse, a "natural female intimacy enhancement" supplement, is being conducted by its maker, Regeneca, Inc., said the U.S. Food and Drug Administration today. The herbal pills actually contain, tadalafil, the drug found in Cialis and other pills used to treat erectile dysfunction in males.

Mindfulness training, in which people learn to focus more completely on what they are doing at the moment, can change brain wave activity in a crucial area, according to a study in the December 13, 2011 Proceedings of the National Academy of Sciences. Investigators used fMRI brain scan mapping to observe what happened in the brains of 12 experienced and 13 inexperienced meditators. They found that experienced meditators were better able to stay focused and bypass what’s known as the brain’s Default Mode Network. This network is activated when we experience “mind-wandering” throughout the day.

Taking vitamin D with calcium supplements reduces fracture risk, especially for institutionalized seniors, but whether the sunshine vitamin prevents cancer is uncertain, according to a systematic review of the medical research published earlier this week in Annals of Internal Medicine.

High oral doses of milk thistle, a botanical supplement used extensively by patients with chronic liver disease, is no more effective than placebo against chronic hepatitis C, according to preliminary findings of a clinical trial presented at the annual meeting of the American Association for the Study of Liver Diseases (AASLD) in San Francisco earlier this month.