Mental function in young adults living in industrialized countries can be improved by taking vitamin C supplements, researchers have said.

The Swiss government has issued new guidance on vitamin D consumption for consumers over the age of 65 and recommends a daily dose of 800 IU (20 µg).

Supplements of vitamin B6 may reduce depression symptoms in young women using oral contraceptives, suggests a small study from Arizona State University.

A review published in the Journal of Internal Medicine provides convincing evidence that micronutrients – including iron, selenium, zinc, copper, and coenzyme Q10 – can impact the function of cardiac cells' energy-producing mitochondria to contribute to heart failure.

Selenium – a mineral found in many foods – could reverse the cognitive impact of stroke and boost learning and memory in aging brains, according to University of Queensland research.

Using B vitamins to lower homocysteine levels is an effective means of reducing blood pressure and may be especially useful in the management of drug-resistant hypertension, according to researchers at the University of Maine and University of Arkansas.

A new Israeli study has found that people who are deficient in vitamin D are up to 14 times more likely to fall severely ill when contracting the coronavirus.

Results from a review and meta-analysis on the effects of tea catechins on influenza and other upper respiratory tract infections reveal “significant preventative effects.”