Orange-pigmented vegetables, such as carrots, sweet potatoes, and yams, have significant quantities of vitamin A. White root vegetables, such as garlic and onions, contain anti-inflammatory properties. Vitamin A helps reduce inflammation in the body by promoting the production of proteins called cytokines that fight infection and repair tissue. Eating a variety of colors of vegetables provides more health benefits than only eating orange or green vegetables. Vitamin C is also thought to play a role in reducing pain sensitivity. Pain signals are transmitted from the site of injury to the brain where they are interpreted as painful sensations. Vitamin C is needed for the formation of collagen, which is one of the main components of bone tissue. People who eat less than 50% of their recommended daily value of vitamin C are more likely to suffer from arthritis pain than those who get more than this amount. Iron is another important mineral that plays a role in reducing pain sensitivity. It does this by helping produce energy cells within our bodies known as mitochondria. Mitochondria are responsible for generating most of the body's cellular energy, so enough iron can make a big difference in feeling tired all the time or not being able to sleep at night due to pain. Magnesium is also important for proper mitochondrial function. It acts as a cofactor for enzymes involved in producing energy from food, and it helps maintain normal muscle tone and bone density.