Vitamin D deficiency has become a fairly common condition in adults. This is a somewhat new finding; however lack of Vitamin D can cause some bad changes to the body. Adults are especially affected because most adults don’t eat foods that have Vitamin D and they often receive very little sunshine. What does Vitamin D do? Vitamin D is responsible for the ability of the body to absorb the mineral calcium. Calcium is necessary to build bones, teeth and other structures. This is why most calcium tablets include Vitamin D. It is also necessary to the electrical reactions that cause muscles to function, including the heart. Vitamin D also plays a role in fighting infections; those will low Vitamin D levels often have many infections. Clearly this Vitamin is vital to bodily function. The body is capable of making Vitamin D using the effect of the sun on the skin, but most people simply don’t expose enough skin to the sun for a long enough period each day. So, the result is a Vitamin Ddeficiency. Deficiency Symptoms There is a disease called rickets. This disease result in malformed bones and growth, especially in children. The cause of this condition is Vitamin D. Giving both Vitamin D and calcium can help with the effects of this disease. But, other symptoms occur before the deficiency becomes this bad. This can include muscle weakness, depression, mental confusion, headaches, constipation, and bone fractures. Diseases Associated With Vitamin D Deficiency Studies have shown a correlation between a number of conditions and Vitamin D deficiency. While Vitamin D does not cause these conditions, low levels can make them worse. Asthma Asthma sufferers, including those with COPD, with low levels of Vitamin D have worse episodes of lung problems and more frequent attacks. Depression Depression increases in those with a lack of Vitamin D. Heart Disease A lack of Vitamin D can cause problems with the function of the heart muscle and the conduction of the electricity that