<Dd> The primary function of the hormone leptin is the regulation of adipose tissue mass through central hypothalamus mediated effects on hunger , food energy use , physical exercise and energy balance . Outside the brain , in the periphery of the body , leptin 's secondary functions are : modulation of energy expenditure , modulation between fetal and maternal metabolism , and that of a permissive factor in puberty , activator of immune cells , activator of beta islet cells , and growth factor . </Dd>
<Dd> The primary function of the hormone leptin is the regulation of adipose tissue mass through central hypothalamus mediated effects on hunger , food energy use , physical exercise and energy balance . Outside the brain , in the periphery of the body , leptin 's secondary functions are : modulation of energy expenditure , modulation between fetal and maternal metabolism , and that of a permissive factor in puberty , activator of immune cells , activator of beta islet cells , and growth factor . </Dd>
​ on which organ or tissue does leptin primarily act
​ on which organ or tissue does leptin primarily act
adipose tissue
adipose tissue