Vitamin D is manufactured in the skin after exposure to sun's ultraviolet rays (it is called "the Sunshine Vitamin"), and it is well known for its role in building strong bones and teeth. Recent research however has led the Canadian Cancer Society and the Canadian Dermatology Association to increase their recommendations for Canadian adults, from 200 IU of Vitamin D to 1000 IU daily. Higher vitamin D and calcium levels have been linked to lower risk for some cancers, including colorectal, breast and colon cancers. Studies have also shown that Vitamin D deficiency
is more common than suspected and may be causing health problems for millions. How could I have a vitamin D deficiency?
Sun exposure on bare skin is the major source of vitamin D, but length of seasons, geographic latitude, cloud cover, smog, and sunscreens can reduce UV ray exposure. In the winter, in northern climates, UVB rays from the sun may not be strong enough to make vitamin D in our skin. Dark-skinned people are especially at risk of D deficiency. Eating low fat foods, avoiding the sun, and not eating enough wild-caught, oily fish (the best dietary source of vitamin D) have all contributed to widespread vitamin D deficiency. What are symptoms of such a deficiency?
Vitamin D deficiencies are linked to rickets in children and osteomalacia (soft bones) in adults. While bone strength is important it's difficult to measure. Vitamin D deficiency can also cause muscle weakness and general aches and pains. With aging, less vitamin D is converted to its active form, and a deficiency can occur in older men and post-menopausal women. In a review of women hospitalized for hip fractures due to osteoporosis, 50 percent were found to have signs of vitamin D deficiency.
One study linked low vitamin D levels in mothers to a five-fold increased risk of preeclampsia, a serious complication in pregnancy, and other research shows more than HALF of otherwise healthy adolescents may be vitamin D deficient, increasing their risk for health problems later in life. Adults with low blood levels of vitamin D may be at higher risk for several types of cancer, as well as high blood pressure, diabetes and bone fractures. Can't I just spend more time in the sun?
Sun exposure on bare skin is the major source of vitamin D, but geographic location, weather, and sunscreens can reduce your useable vitamin D. To minimize health risks associated with UVB radiation exposure, and maximize Vitamin D benefits, supplementation combined with a small amount of sun exposure, is the recommended way to assure optimum levels of vitamin D. What does Vitamin D do?
It acts as a vitamin and as a hormone that stimulates calcium absorption and utilization. This in turn boosts bone mineral density and can help prevent osteoporosis. Research suggests higher doses of vitamin D may protect us from certain cancers and multiple sclerosis. For example, a study published in The American Journal of Clinical Nutrition found that post menopausal women who took Vitamin D supplements and calcium substantially reduced their all-cancer risk. Those with higher the levels of Vitamin D in the blood, had a lower relative risk of developing cancer. Another study suggests that women who consume more calcium and vitamin D are less likely to develop breast cancer before menopause. Is all Vitamin D the same?
No. Only the natural form of vitamin D enhances human health. When buying a vitamin D supplement it is important to get vitamin D3 (also called cholecalciferol). This is the form made by your skin on a sunny day. Supplement with Holista's 400 IU
or 1000 IU
vitamin D3 for good bone health and overall health protection.
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