There are many reasons why a person may feel numbness or tingling in their legs or feet. The most common is sitting in the same position for too long, which reduces blood flow to the legs. Causes for chronic numbness include multiple sclerosis and fibromyalgia. Learn more about symptoms, causes, and treatments here.

A study looks at the relationship between diet, gut bacteria, and osteoarthritis. Surprisingly, it found that the microbiome is linked to joint health.

A recent study looks at the links between the immune system, gut bacteria, and autism spectrum disorders. It uncovers some interesting interactions.