Two omega-3 fatty acids found in fish oil may help improve brain function in older adults who have a type of heart disease known to put people at risk for cognitive decline.

Dietary and circulating vitamin C levels are inversely associated with metabolic syndrome, according to a new meta-analysis of observational studies.

Overwhelming evidence suggests a link between higher vitamin D levels and lower incidence and severity of COVID-19.

A review of 12 studies, including five randomized controlled trials, has been published in the journal Life, finding that vitamin C is effective at treating Covid-19.

A new review of 28 studies involving almost 5,500 people has found that taking supplemental zinc by mouth or as a nasal spray could ward off infection and may make people feel better more quickly.

Americans have turned to dietary supplements in record numbers over the past two years, with the numbers of users hitting new highs, according to a new consumer survey.

Research conducted at the Institut national de la recherche scientifique in Quebec, Canada, has shown that an oxidation-antioxidant imbalance in the blood is an early indicator of Alzheimer's disease.

Vitamin B6 supplement dosages should be restricted to 10 mg a day or less, with higher dosages sold only as prescriptions, a so-called ‘citizen’ petition to the United States Food and Drug Administration (FDA) has requested.