Vitamin D guards against artery disease

Vitamin D may protect against an artery disease in which fatty deposits restrict blood flow to the limbs. People with low levels of vitamin D in their blood experience an increased risk for a condition known as peripheral artery disease, or PAD. PAD most often reduces blood flow to the legs, causing pain and numbness, impairing the ability to walk and in some cases leading to amputation. It develops when fatty deposits accumulate in the inner linings of artery walls, cutting blood flow and oxygen to the legs, feet, arms and elsewhere. American researchers did a survey involving 4,839 adults who had their blood vitamin D levels measured and underwent a screening method for PAD that assesses blood flow to the legs. It was found that the people in the lowest 25 percent of vitamin D levels were 80 percent more likely to have PAD than those in the highest 25 percent. Participants in the survey who had the lowest vitamin D levels had a much higher prevalence of peripheral artery disease. But the researchers also said that it would be premature for people to start taking vitamin D supplements because more studies are needed to confirm that it is protective. It was noted that other vitamins that had been thought to possibly help prevent cardiovascular disease such as vitamin E did not pan out after further research. Vitamin D helps the body absorb calcium and is considered important for bone health. In adults, vitamin D deficiency can lead to osteoporosis, and it can lead to rickets in children. Some studies have indicated it might provide other benefits. For example, one found that people with low vitamin D levels had an elevated risk for heart attack, heart failure and stroke, suggesting the vitamin may protect against cardiovascular disease. The body makes vitamin D when skin is exposed to sunlight. It is found in fatty fish such as salmon. Milk commonly is fortified with it. People with PAD have a four to five times greater risk of heart attack or stroke.