PS-Vitamin D Postition Statement关于维生素D的立场声明.pdfVIP

Position Statement on VITAMIN D (Approved by the Board of Directors November 1, 2008 Amended by the Board of Directors June 19, 2009 Amended by the Board of Directors November 14, 2009) The American Academy of Dermatology recommends that an adequate amount of vitamin D should be obtained from a healthy diet that includes foods naturally rich in vitamin D, foods/beverages fortified with vitamin D, and/or vitamin D supplements. Vitamin D should not be obtained from unprotected exposure to ultraviolet (UV) radiation. • Unprotected UV exposure to the sun or indoor tanning devices is a known risk factor for the development of skin cancer.1 o Studies have shown that UV radiation from both the sun and tanning devices can cause oncogenic mutations in skin cells.2,3 Use of sunbeds has also been associated with increased risk for melanoma and squamous cell carcinoma.4 • There is no scientifically validated, safe threshold level of UV exposure from the sun or indoor tanning devices that allows for maximal vitamin D synthesis without increasing skin cancer risk. • To protect against skin cancer, a comprehensive photoprotective regimen, including the regular use and proper use of a broad-spectrum sunscreen, is recommended.5 The Academy also recommends that physicians should provide information on options for obtaining sufficient dietary or supplementary sources of vitamin D to their patients who are at high risk for vitamin D insufficiency. • Many epidemiological studies suggest an association between low serum vitamin D levels and increased risk of certain types of cancers, neurologic disease, autoimmune disease and cardiovascular disease.7-15 o It should be emphasized that the causal relationship of vitamin D to these