For compounds to pass through the skin, they need to be both tiny and fat-soluble; caffeine and vitamins A, D, E, and K all meet those criteria, says Jordan Glenn, the head of science at SuppCo, an ...

Rachael Link is a registered dietitian and health writer based in San Francisco. She completed her undergraduate degree at the University of Central Missouri and holds a master’s degree from New York ...

As a multitude of scientific studies have shown, what we eat and drink has a direct impact on our brains. (Soda, alcohol and sugary treats? Not great for it. Fish, olive oil and veggies? Gold star.) ...

Vitamin D does many wonders for the human body, and now, supplements have added one more. According to findings published in The American Journal of Clinical Nutrition earlier this week, vitamin D ...

Most of the potassium in the body is stored inside cells. Typical potassium concentrations in the blood range from around 3.6 to 5 millimoles per liter. Blood potassium levels can indicate potassium ...