Hormonal
The hypothalamus regulates basal metabolic rate (RMR) and adaptive thermogenesis through distinct neuronal populations and hormonal axes, with lean mass and thyroid hormone signaling being primary determinants of energy expenditure.
Focus on preserving lean muscle mass, as it is the largest driver of your resting metabolic rate. Your brain's hypothalamus regulates your baseline calorie burn through hormonal signals (like thyroid and leptin) and neural pathways. While exercise matters, your body's internal 'thermostat' sets the stage for how efficiently you burn energy at rest.
The hypothalamus exerts its effect through both humoral and neuronal mechanisms, and each hypothalamic area has a distinct role in the regulation of energy expenditure.
Why this rating
Review of multiple animal studies with consistent mechanistic findings, though human translation is noted as complex.
Source
Hypothalamic control of energy expenditure and thermogenesis
Trung Le Tran et al. · Experimental & Molecular Medicine · 2022
DOI 10.1038/s12276-022-00741-z
More from this paper
- Cold exposure induces adaptive thermogenesis primarily through non-shivering thermogenesis (NST) mediated by brown adipose tissue (BAT) and UCP1, regulated by the hypothalamus.Good
- Spontaneous physical activity (SPA) and non-exercise activity thermogenesis (NEAT) are significant contributors to energy expenditure, regulated by hypothalamic nuclei such as the lateral hypothalamus (LH) and arcuate nucleus (ARC).Good
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