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.

Elon Musk's Neuralink has been awarded breakthrough status from the FDA for an implantable chip – dubbed Blindsight – that promises to restore the sight of people with vision impairment.

Read the latest research in biochemistry -- protein structure and function, RNA and DNA, enzymes and biosynthesis and more biochemistry news.