What to know about the 500-calorie diet

A person on a 500-calorie diet eats only about a quarter of the recommended daily intake. This may be beneficial for some people, but also comes with many risks. In this article, we look at research on the 500-calorie diet, explain what people need to consider before trying the diet, and provide alternative diets.

How four cups of coffee might protect the heart

Caffeine is known to protect against heart disease and stroke. A new study finds the mechanism that underpins this protection, and mitochondria are key.