摘要
Vitamin D contributes significantly to human bone formation, growth, metabolism and disease prevention. During 2007-2009 and 2012-2013, we measured serum calcidiol (25-hydroxyvitamin D3, 25-(OH)D) in Lhasa, Shigatse, Tingri, Nagqu and other places of Tibet in order to get the status of the overall level of vitamin D in Tibet. We also studied influence of area, occupation, age, gender, season and other factors on the serum 25(OH)D level. Results of our study indicate that: 1) in Tibet, the overall serum concentration of calcidiol is in deficiency range (25(OH)D level is 12.25 ng/ml);2) the serum level of 25(OH)D in different regions is generally the same;3) the serum level of 25(OH)D in young and middle-aged people is 20% higher than that in elder;4) the level of 25(OH)D in male is slightly higher than in female;5) the level of 25(OH)D in summer is significantly higher than that in winter;6) there are obvious differences in serum level of 25(OH)D among tested subjects with different occupations.
Vitamin D contributes significantly to human bone formation, growth, metabolism and disease prevention. During 2007-2009 and 2012-2013, we measured serum calcidiol (25-hydroxyvitamin D3, 25-(OH)D) in Lhasa, Shigatse, Tingri, Nagqu and other places of Tibet in order to get the status of the overall level of vitamin D in Tibet. We also studied influence of area, occupation, age, gender, season and other factors on the serum 25(OH)D level. Results of our study indicate that: 1) in Tibet, the overall serum concentration of calcidiol is in deficiency range (25(OH)D level is 12.25 ng/ml);2) the serum level of 25(OH)D in different regions is generally the same;3) the serum level of 25(OH)D in young and middle-aged people is 20% higher than that in elder;4) the level of 25(OH)D in male is slightly higher than in female;5) the level of 25(OH)D in summer is significantly higher than that in winter;6) there are obvious differences in serum level of 25(OH)D among tested subjects with different occupations.
