dietary supplement

The results from two large clinical trials don't support the idea that supplements of the vitamin bolster immune defenses against SARS-CoV-2.

A large trial adds to a growing list of conditions once thought to be helped by vitamin D supplementation.

Acting through the microbiome, the fiber arabinoxylan reduces cholesterol in many people, while another fiber, called long-chain inulin, increases inflammation, a study finds.

Niacin, a form of vitamin B3 used to treat cardiovascular disease, helps immune cells in the brain fight neurodegenerative diseases such as Alzheimer’s in mice models, according to recent studies. Researchers hope that human clinical trials will swiftly follow.

Services promising scientifically tailored supplements or advice abound. Experts say their claims are largely unfounded, although some solid evidence is beginning to emerge.

The agency sends warning letters to makers of products that claim to prevent or treat Alzheimer’s and other diseases, and announces changes to its enforcement practices.

FDA does little about it, study finds.

The herbal supplement, deemed an opioid by the FDA, was recently linked to a Salmonella outbreak in 20 states. 

Pregnant women who took a fish oil supplement during pregnancy were less likely to have children with asthma.

Rodent models of Huntington’s disease show dysfunctional cysteine production, and adding the amino acid to their diets seems to relieve symptoms.  

Tamoxifen, an endocrine therapy for women with breast cancer, is found in a supplement marketed to bodybuilders.

Despite abundant evidence supporting their ability to help prevent and treat cardiovascular disease, the therapeutic effectiveness of fish oil–derived fatty acids remains controversial.

A magnesium supplement thought to improve brain functioning gets a small clinical trial.

People living on islands in the Norwegian Sea suffer from an unusually high rate of certain genetic diseases and health issues, making the population ripe for research.

Dietary supplements can have serious side effects when mixed with prescription drugs, but not all herb-drug interactions are bad.

A new meta-analysis finds that resveratrol, currently marketed as a life-extending health supplement, may have a negligible effect on lifespan in humans.