New US in vitro experiments suggest that high concentrations of certain naturally occurring molecules derived from beta-carotene may be associated with health hazards under specific conditions. An adequate intake of beta-carotene remains recommended.

According to a new review, data from dietary intake surveys indicate that vitamin inadequacy is widespread among healthy, elderly people, even those in affluent Western countries.

US researchers suggest, based on animal experiments, that dietary vitamin E in the form of gamma- and delta-tocopherol could be beneficial in reducing the risk of, and even treating, certain cancers. Experts criticized that animal models do not accurately reflect human metabolism and that cancer development depends on multiple factors.

Vitamin D supplements could reduce blood pressure in patients diagnosed with hypertension, states a new study from Denmark.

According to a new Canadian review, supplementation with high-dose antioxidant vitamins and trace elements may reduce mortality risk of patients with greater severity of illness, particularly those at high risk of death.