Research
Energy balance
UCP1 (Uncoupling Protein 1) is essential for cold-induced thermogenesis but is not the primary mediator of diet-induced thermogenesis in resisting obesity, as UCP1 knockout mice remain resistant to diet-induced obesity.
While UCP1 is crucial for staying warm in the cold, it doesn't appear to be the main reason your body burns off excess calories from food. This suggests that weight management involves a more complex system than just activating one specific protein in brown fat.
GoodQualifiesHIGH confidence
UCP1 gene knock-out mice, despite being sensitive to cold exposure, have normal resting energy expenditure at room temperature, are not obese, and are resistant to diet-induced obesity... This is in striking contrast to $\beta$-less mice which... are extremely sensitive to diet-induced obesity.
Why this rating
Based on knockout mouse studies, providing strong mechanistic insight, though human relevance is debated.
Source
β-Adrenergic Receptors, Diet-induced Thermogenesis, and Obesity
Bradford B. Lowell et al. · Journal of Biological Chemistry · 2003
DOI 10.1074/jbc.r300011200
narrative_reviewCited 173×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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