Thermogenesis

Thermogenesis is your body’s way of generating heat by burning calories. It happens naturally when you digest food, when you are exposed to cold temperatures, and during physical activity. Some foods and compounds, like protein and caffeine, can slightly increase thermogenesis.

Thermogenesis refers to the metabolic production of heat through several mechanisms: obligatory thermogenesis (basal metabolic rate), diet-induced thermogenesis (DIT, approximately 10% of energy intake), and facultative thermogenesis (cold-induced and activity-related). Brown adipose tissue is a key site of non-shivering thermogenesis via uncoupling protein 1 (UCP1), which dissipates the proton gradient to generate heat rather than ATP.

Reduced thermogenesis is one reason some individuals struggle with weight loss despite similar caloric intake. Medical weight management programmes can address this through strategies that preserve or enhance metabolic rate, such as adequate protein intake and resistance training to maintain lean muscle mass.