The largest sleep study ever conducted concludes that both sleeping too little and too much negatively impacts cognitive ability, regardless of age.

A network meta-analysis of 55 studies suggests that safflower, rape, sunflower, and other seed oils are the best vegetable oils for improving cholesterol.

Stress is a biological response to demanding situations and a regular part of daily life. Stress becomes chronic when the body’s response goes on for a prolonged period. Chronic stress can have a range of health effects. Learn more about these effects and how to manage chronic stress here.