Overview

Brown adipose tissue generates heat through uncoupled mitochondrial respiration and contributes to thermoregulation and energy expenditure. It is more prevalent in infants and can persist in adults in specific depots. Brown fat activity influences metabolic rate and glucose homeostasis.

Anatomic Locations

Brown fat depots are commonly found in the supraclavicular and paravertebral regions and around major vessels. PET imaging detects metabolically active brown fat due to high glucose uptake. Environmental and pharmacologic factors modulate activity.

Metabolic Role

Brown fat consumes substrates to produce heat and may protect against obesity and metabolic disease. Activation increases energy expenditure and improves glucose metabolism in experimental models. Research explores therapeutic activation for metabolic benefit.

Clinical Relevance

Brown fat activity can confound PET imaging interpretation and is a target for metabolic therapies. Understanding depot distribution aids imaging analysis and research. Modulating brown fat may offer novel approaches to treat metabolic disorders.