Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
Read more health news
Diagnosis of runner's knee begins with a history and physical exam. Joint X-rays are usually normal. The healthcare provider may do an arthroscopy. The provider inserts a small, lighted tube into the joint and examines it.