There is increasing support for a daily dose of vitamin D of 1,000-2,000 IU from all sources (including sunlight, food and supplements) and possibly 5,000 IU in winter for people living in the northern regions.
Vitamin D is essential to promote calcium absorption necessary for bone growth and remodeling, and is one of the most important elements of an osteoporosis prevention program. As the importance of vitamin D is better understood, there is considerable controversy surrounding the dose of vitamin D and the target blood levels needed for healthy bone development and overall well-being. Research now suggests that vitamin D deficiency is widespread in northern countries and may be a factor in several types of cancer as well as heart disease, stroke, hypertension, autoimmune diseases and depression. The government's vitamin D guidelines are currently under review and are expected to recommend a higher dose of vitamin D in response to recent research findings. Although new government guidelines are expected in 2010, the debate over the optimal dose of vitamin D is likely to continue. More research is needed into the many factors affecting vitamin D deficiency, including ethnicity, gender, and region of residence; Age range and medical conditions. A review of the current recommendations will provide a useful context for designing an osteoporosis prevention program as the debate continues. ADDITIVE LEVEL OF INTAKE (AI) AND DAILY VALUE (DV) OF VITAMIN D (200-400 IU daily) The current levels of adequate intake (AI) of vitamin D were determined in 1997 by the US Institute of Medicine. UU. From the National Academy of Sciences. (These recommendations are currently under review). The recommendations are 200 IU (international units) daily for all persons under 50, including pregnant / lactating women. For anyone aged 50 to 70, 400 IU is recommended and 600 IU is recommended for these 70 years. The recommended upper limit of 2,000 IU daily is now considered obsolete by most medical professionals. The U.S. Food and Drug Administration. UU. He identified a daily value (DV) of 400 IU vitamin D for all adults and for children over four years. The percentage of daily value of vitamin D contained in dairy, soy milk, cereals and vitamin supplements is based on 400 IU, although most experts now believe this is not sufficient to protect our bone health. The regions north of the 42 latitudes (north of Boston, Rome and around Beijing) require significantly more vitamin D, either through fortified foods or supplements, as there is not enough ultraviolet radiation from the sun in late fall and winter to allow D- Vitamin occurs naturally through the skin go to https://www.bestvitaminsforall.com/. RECOMMENDATIONS TO THE NATIONAL FUNDATION FOR OSTEOPOROSIS (400-1,000 IU daily) National Osteoporosis Foundation (NOF) in the United States. UU. Recommends that adults under 50 years receive 400-800 IU vitamin D daily, and adults 50 years and older receive 800-1,000 IU. He also recognizes that some people may need more vitamin D. CANCER CANCER SOCIETY (1,000 IU daily) The Canadian Cancer Society recommends that adults take 1,000 IU of vitamin D daily during the winter months, and adults at higher risk of vitamin D deficiency (those who are older, have dark skin, spend more time indoors, or are covered in the outdoors). the year. Vitamin D experts vary in their recommendations regarding the optimal dose of vitamin D, but most now recommend higher levels than those currently proposed by the National Osteoporosis Foundation, the Food and Drug Administration and the Canadian Cancer Society. DR. MICHAEL HOLICK (1,000-2,000 IU daily) Dr. Michael Holick, author of The UV Advantage, encourages people to get as much vitamin D from the sun as possible. But for people with limited sun exposure, it recommends 1,000 IU of vitamin D through supplements, and for people living north of Atlanta or Boston, it recommends that a dose of 2,000 IU of vitamin D help maintain optimal blood levels. . DR. CLEAN VIETH (4,000 IU daily) Dr. Reinhold Vieth of Mount Toronto. Sinai Hospital estimates the daily need for vitamin D from all sources of 4,000 IU and provides convincing evidence that 10,000 IU is a safe and desirable level. (The term "of all
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