As you age you absorb less vitamin B12 from food and do not make as much vitamin D from the sun. Vitamin B12 is essential for proper functioning of red blood cells and the nervous tissue. Vitamin B12 deficiency can also occur if you are a vegetarian or vegan because most meats are high in proteins and contain Vitamin B12. The elderly, people with little exposure to the sun, obese individuals and people with inflammatory bowel disease are at greater risk for vitamin D deficiency. Symptoms of vitamin D deficiency include bone and muscle weakness. Prolonged vitamin D deficiency puts you at greater risk for cardiovascular disease, high blood pressure, cancer, osteoporosis and certain autoimmune disorders.
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