Vitamin D

Vitamin D is a fat soluble vitamin found in foods and is also made by the body after exposure to ultraviolet light. Sunshine is a significant source of vitamin D, because vitamin D synthesis is triggered by the UV rays from sunlight.  Sunlight can provide most of the Vitamin D needed by the body.  10-15 minutes of sun two or more times per week on the exposed by is sufficient to attain enough Vitamin D.  Lack of sunlight can make a person deficient unless added by their diet.  Infants who are breastfed exclusively may need extra Vitamin D.

Vitamin D prevents bones from becoming thin, brittle, or misshapen. It also prevents rickets in children and osteomalacia in adults both of which weaken bones. It may also help maintain a healthy immune system and help to regulate cell growth and differentiation.

Once Vitamin D is produced in the skin or consumed in food, the liver or kidneys convert to a hormone and it tells the intestines to increase the absorption of calcium and phosphorus.  This means that vitamin D helps to form and maintain strong bones. Vitamin D also works with other vitamins, minerals, and hormones to promote bone mineralization. Vitamin D is needed or bones can become thin, brittle, or misshapen.

Vitamin D may help maintain a healthy immune system and help regulate cell growth and differentiation.

Cod liver oil, fish cereal, eggs, liver and milk are excellent sources of Vitamin D.