Adipose tissue (Body fat mass)

Adipose tissue (commonly referred to as body fat) is primarily composed of adipocytes embedded within connective tissue stroma that also contains preadipocytes, fibroblasts, vascular endothelial cells, and immune cells such as macrophages[1]. It serves essential roles in energy storage by accumulating lipids released from dietary intake or synthesized de novo from excess carbohydrates. Beyond its role in energy homeostasis, adipose tissue acts as an endocrine organ by secreting hormones like leptin and adiponectin that regulate hunger signals and metabolism[1][2]. It also provides insulation against temperature extremes and cushions internal organs. There are two main types: white adipose tissue (WAT), which stores energy reserves throughout the body under the skin (subcutaneous) or around internal organs (visceral), and brown adipose tissue (BAT), which generates heat through non-shivering thermogenesis—primarily found during infancy but present at lower levels throughout life[1]. Excessive accumulation of adipose tissue leads to obesity—a major risk factor for numerous chronic diseases including type 2 diabetes mellitus due largely to insulin resistance caused by inflammatory cytokines released from enlarged adipocytes along with altered hormone profiles within expanded visceral depots compared with subcutaneous ones.[4] Conversely insufficient amounts result either genetically rare lipodystrophies where patients lack normal amounts leading severe metabolic derangements despite being underweight otherwise healthy individuals may experience similar complications if they lose too much weight rapidly without adequate nutrition replacement therapy available options currently limited mostly lifestyle interventions rather than targeted pharmacotherapy directed specifically at modulating total-body-fat content itself.[5] In summary while “adiposity” describes overall amount stored across various anatomical sites rather than any particular protein complex amenable traditional small-molecule inhibition strategies commonly employed pharmaceutical industry today making it difficult develop therapeutics directly targeting this parameter alone instead most approaches focus on upstream regulators downstream consequences thereof via indirect means affecting appetite satiety pathways increasing physical activity reducing caloric intake etcetera all ultimately influencing net balance between deposition mobilization fatty acids triglycerides within these specialized tissues themselves.[3]

Other names

Body fatFat massAdipose tissueSubcutaneous fatVisceral fat