Eat less – Move More? Are we fat because we have become sedentary?
Study of the Hadza (Pontzer H, Raichlen DA, Wood BM, Mabulla AZP, Racette SB, et al. (2012) Hunter-Gatherer Energetics and Human Obesity. PLOS ONE 7(7): e40503.).
…average daily energy expenditure of traditional Hadza foragers was no different than that of Westerners after controlling for body size.
The metabolic cost of walking (kcal kg−1 m−1) and resting (kcal kg−1 s−1) were also similar among Hadza and Western groups. The similarity in metabolic rates across a broad range of cultures challenges current models of obesity suggesting that Western lifestyles lead to decreased energy expenditure. We hypothesize that human daily energy expenditure may be an evolved physiological trait largely independent of cultural differences.
Pontzer H, Raichlen DA, Wood BM, Mabulla AZP, Racette SB, Marlowe FW. Hunter-Gatherer Energetics and Human Obesity. Chehab FF, ed. PLoS ONE. 2012;7(7):e40503.