A new review finds that 30 known vitamins and minerals, as well as 11 other compounds, are crucial to maintaining health and prolonging the lifespan.

A new review looks at the impact of heart valve surgery on cognitive ability. A deficit may occur during the first few months, but more study is needed.

Magnesium is essential for health, but taking too much can cause problems, including digestive issues, lethargy, and an irregular heartbeat. In rare cases, an overdose can be fatal. Learn more here.