Vitamin D is a fat-soluble vitamin. Exposure to sunlight stimulates your body to produce vitamin D, which is why it is often called “the sunshine vitamin.” Your body also stores vitamin D. Vitamin D assists calcium in making strong bones, and is known to help prevent some cancers by regulating your cells and your immune system. Too much or too little vitamin D can have an effect on your body, but it does not cause cold feet.
Effects of Too Little Vitamin D
Vitamin D deficiency is fairly common in people with dark skin and those who live in northern climates, according to the University of Maryland Medical Center. Preliminary research suggests that there is a link between adults who get enough vitamin D and a lower risk of certain cancers as well as depression, high blood pressure and obesity. Vitamin D deficiency in children is serious and can lead to rickets, which causes their still-forming bones to become weak and soft.
Sources of Vitamin D
Vitamin D supplements are widely available. Dietary sources of vitamin D include fortified dairy products and breakfast cereals. Salmon and tuna also contain high levels of vitamin D. Exposure to sunlight is also helpful in stimulating the production of vitamin D, especially in northern climates where the sun is not as strong. Spending 45 minutes each week in natural sunlight is enough to stimulate the production of vitamin D in a fair-skinned person. Someone with darker skin requires up to three hours each week to get the same effect.
Effects of Too Much Vitamin D
Experts disagree as to how much vitamin D is too much. The National Institutes for Health recommends no more than 2,000 milligrams per day for adults, but some experts believe this is not high enough. Too much vitamin D is associated with side effects such as bone pain, constipation, diarrhea, excessive thirst, itchy skin and a metallic taste in the mouth, among other symptoms, so stay under 2,000 milligrams per day unless your doctor instructs otherwise.
Warning
Cold feet are usually caused by a drop in the temperature or exposure to cold water. When your brain registers that your feet are cold, it limits the blood circulating to them to protect your organs and brain, which are more crucial to you. Chronically cold feet can be one sign of a more serious condition. If you experience cold and numbness in your feet, and especially if you notice any discoloration, consult your health care provider immediately.
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