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Obesity in Tibetans Aged 30–70 Living at Different Altitudes under the North and South Faces of Mt. Everest
Section for Preventive Medicine and Epidemiology, University of Oslo, Frederik Holsts hus, Ulleval terrasse, Kirkeveien 166, 0450 Oslo, Norway
Tibet University Medical College, No.1 Loubulinka Road, Lhasa, Xizang 850002, China
National Institute of Public Health, Oslo, Norway
Epidemiology Unit, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
Nepal Institute of Health Sciences affiliated to Purbanchal University, Kathmandu, Nepal
* Author to whom correspondence should be addressed.
Received: 11 March 2010; in revised form: 8 April 2010 / Accepted: 9 April 2010 / Published: 13 April 2010
Abstract: Risk factors for chronic diseases in Tibetans may be modified due to hypobaric hypoxia. The objectives of this study were to determine the prevalence of obesity at varying altitudes of 1,200, 2,900 and 3,700 meters above sea-level in Tibet and Nepal; to estimate the effect of altitude on body mass index (BMI), waist circumference (WC) and waist-to-height ratio (WHtR). Three cross-sectional studies with simple random sampling were performed on 617 men and women. BMI, WC and WHtR decreased with increasing altitude. It is likely that the physical conditions such as low temperatures and low oxygen levels have a direct catabolic effect.
Keywords: obesity; WHtR; BMI; waist circumference; Tibetans; Tibet; Everest; Nepal
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MDPI and ACS Style
Sherpa, L.Y.; Deji; Stigum, H.; Chongsuvivatwong, V.; Thelle, D.S.; Bjertness, E. Obesity in Tibetans Aged 30–70 Living at Different Altitudes under the North and South Faces of Mt. Everest. Int. J. Environ. Res. Public Health 2010, 7, 1670-1680.
Sherpa LY, Deji, Stigum H, Chongsuvivatwong V, Thelle DS, Bjertness E. Obesity in Tibetans Aged 30–70 Living at Different Altitudes under the North and South Faces of Mt. Everest. International Journal of Environmental Research and Public Health. 2010; 7(4):1670-1680.
Sherpa, Lhamo Y.; Deji; Stigum, Hein; Chongsuvivatwong, Virasakdi; Thelle, Dag S.; Bjertness, Espen. 2010. "Obesity in Tibetans Aged 30–70 Living at Different Altitudes under the North and South Faces of Mt. Everest." Int. J. Environ. Res. Public Health 7, no. 4: 1670-1680.