What does the omega-3 index measure, and does a low value matter for athletes? What studies show on fish oil, heart rate, oxygen cost and endurance performance.

Most athletes believe they're food sensitive, but only 1 in 100 reacts in allergy testing. Learn why IgG tests don't work and what you should be doing if you experience symptoms.

Does fish oil reduce muscle loss in a cast, soreness after hard exercise or the effects of head impacts? What studies on fish ...

Food sensitivity tests have become a common product aimed at athletes. A home kit contains a lancet, a card for a finger-prick blood sample and a return envelope, and a few days later the athlete ...