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J Intern Med. 2007 Sep;262(3):273-87.

Nonexercise activity thermogenesis--liberating the life-force.

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Endocrine Research Unit, Mayo Clinic, Rochester, MN 5590, USA.


Obesity occurs when energy intake exceeds energy expenditure over a protracted period of time. The energy expenditure associated with everyday activity is called NEAT (Nonexercise activity thermogenesis). NEAT varies between two people of similar size by 2000 kcal day(-1) because of people's different occupations and leisure-time activities. Data support the central hypothesis that NEAT is pivotal in the regulation of human energy expenditure and body weight regulation and that NEAT is important for understanding the cause and effective treatment for obesity.

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