Marc Weijie Ong1, Chun Hai Tan2, Anton Kui Sing Cheng2. 1. Department of General Surgery, Khoo Teck Puat Hospital, 90 Yishun Central, Singapore, 768828, Singapore. marcwj_ong@hotmail.com. 2. Department of General Surgery, Khoo Teck Puat Hospital, 90 Yishun Central, Singapore, 768828, Singapore.
Abstract
PURPOSE: Low vitamin D status is prevalent worldwide and has been linked to a variety of pathologies including obesity in adults. The severity of vitamin D deficiency amongst the overweight and obese Singaporeans is not well documented. The purpose of this prospective observational study was to assess the prevalence and determinants of vitamin D deficiency in a multi-ethnic Asian population referred for weight management, including those seeking bariatric surgery. MATERIALS AND METHODS: This was a cross-sectional study conducted among 111 consecutive subjects referred to a single institution weight management service in Singapore. The data collected included their anthropometric data, body mass index (BMI), body fat percentage, waist circumference, 25-hydroxyvitamin D [25(OH)D] and other bone turnover markers. RESULTS: The average BMI among the 111 subjects was 40.1 ± 8.2 kg/m2 and mean age of 40 ± 10 years. Vitamin D deficiency was found in 75.7% of the population. There was a significant negative association of vitamin D with adiposity markers including BMI (r = - 0.31), body fat percentage (r = - 0.34) and waist circumference (r = - 0.26). Predictors of vitamin D deficiency included age > 50 years, female gender, waist circumference and body fat percentage. CONCLUSION: Vitamin D deficiency is prevalent among this target population in Singapore regardless of ethnicity. In particular, the elderly, females, those with larger waist circumference and body fat percentage were significantly associated with lower serum 25(OH)D level. Hence, routine screening for the overweight and obese subjects in multi-ethnic Singapore seeking weight management is indicated.
PURPOSE: Low vitamin D status is prevalent worldwide and has been linked to a variety of pathologies including obesity in adults. The severity of vitamin Ddeficiency amongst the overweight and obese Singaporeans is not well documented. The purpose of this prospective observational study was to assess the prevalence and determinants of vitamin Ddeficiency in a multi-ethnic Asian population referred for weight management, including those seeking bariatric surgery. MATERIALS AND METHODS: This was a cross-sectional study conducted among 111 consecutive subjects referred to a single institution weight management service in Singapore. The data collected included their anthropometric data, body mass index (BMI), body fat percentage, waist circumference, 25-hydroxyvitamin D [25(OH)D] and other bone turnover markers. RESULTS: The average BMI among the 111 subjects was 40.1 ± 8.2 kg/m2 and mean age of 40 ± 10 years. Vitamin Ddeficiency was found in 75.7% of the population. There was a significant negative association of vitamin D with adiposity markers including BMI (r = - 0.31), body fat percentage (r = - 0.34) and waist circumference (r = - 0.26). Predictors of vitamin Ddeficiency included age > 50 years, female gender, waist circumference and body fat percentage. CONCLUSION:Vitamin Ddeficiency is prevalent among this target population in Singapore regardless of ethnicity. In particular, the elderly, females, those with larger waist circumference and body fat percentage were significantly associated with lower serum 25(OH)D level. Hence, routine screening for the overweight and obese subjects in multi-ethnic Singapore seeking weight management is indicated.
Entities:
Keywords:
25-hydroxyvitamin D [25(OH)D]; BMI; Body fat percentage; Vitamin D deficiency; Waist circumference
Authors: Jeffrey I Mechanick; Adrienne Youdim; Daniel B Jones; W Timothy Garvey; Daniel L Hurley; M Molly McMahon; Leslie J Heinberg; Robert Kushner; Ted D Adams; Scott Shikora; John B Dixon; Stacy Brethauer Journal: Obesity (Silver Spring) Date: 2013-03 Impact factor: 5.002
Authors: Joan M Lappe; Dianne Travers-Gustafson; K Michael Davies; Robert R Recker; Robert P Heaney Journal: Am J Clin Nutr Date: 2007-06 Impact factor: 7.045
Authors: T J Green; C M Skeaff; J E P Rockell; B J Venn; A Lambert; J Todd; G L Khor; S P Loh; S Muslimatun; R Agustina; S J Whiting Journal: Eur J Clin Nutr Date: 2007-03-07 Impact factor: 4.016