Fibromyalgia is a chronic pain condition that affects approximately five million people worldwide. As of right now, there is no cure and no known cause for the disease, but it's believed that diet can play a large part in the management of symptoms. Here are five diet tips to help you control your fibromyalgia flares based on information from prevention.com: Get Enough Vitamin D Vitamin D is often called the sunshine vitamin as it's derived from the sun's rays. Many of us are deficient in this vital vitamin, particularly through the winter, which can lead to joint and muscle pain. Vitamin D is needed to build healthy bones, improve the immune system, regulate blood pressure and help to prevent cancer. Foods that are good sources of vitamin D include eggs, fish, dairy, fortified cereals, and fruit juices. Speak to your doctor about vitamin D supplements. Vitamin D may help fibromyalgia patients deal with pain and fatigue. Find out more.