期刊
PROCEEDINGS OF THE NUTRITION SOCIETY
卷 74, 期 4, 页码 405-412出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S002966511500169X
关键词
Obesity; Muscle; Sarcopenia; CVD; Mortality; Older adults
资金
- National Institute for Health Research School for Primary Care Research
- British Heart Foundation [RG/08/013/25942, RG/13/16/30528] Funding Source: researchfish
- National Institute for Health Research [SPCR-031] Funding Source: researchfish
This paper reviews the health implications of obesity, sarcopenia and sarcopenic obesity on CVD and mortality in older adults and discusses the obesity paradox seen in patients with CVD. Obesity is a major public health problem with increasing prevalence worldwide. It is an established risk factor for cardiovascular morbidity and mortality in adult populations. However, there is controversy surrounding the effects of obesity as measured by BMI in older people, and overweight and obesity (BMI >= 25 kg/m(2)) are apparently associated with increased survival in those with CVD (obesity paradox). Ageing is associated with an increase in visceral fat and a progressive loss of muscle mass which have opposing effects on mortality. Thus BMI is not a good indicator of obesity in older adults. Sarcopenia, the age-associated loss of skeletal muscle mass, is a major concern in ageing populations and has been associated with metabolic impairment, CVD risk factors, physical disability and mortality. Sarcopenia often coexists with obesity. Sarcopenic obesity is a new category of obesity in older adults who have high adiposity coupled with low muscle mass. To fully understand the effect of obesity on mortality in the elderly it is important to take muscle mass into account. The evidence suggests that sarcopenia with obesity may be associated with higher levels of metabolic disorders and an increased risk of mortality than obesity or sarcopenia alone. Efforts to promote healthy ageing should focus on both preventing obesity and maintaining or increasing muscle mass.
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