• Endocrine and brain-regulated control of adiposity emerges as a unifying pattern, demonstrated by hypothalamic lesions and hypophysectomy, and by adrenal-fat interactions that modulate energy balance across species [14] [10] [2] [5] [16].

• Pharmacological and behaviorally driven modulation of appetite and metabolism recurs as a methodological theme, with benzadrine/amphetamine interventions, insulin-modulated appetite, and energy-metabolism studies shaping obesity management assumptions [11] [17] [7] [18] [12] [13].

• Public health and developmental framing of obesity in childhood appear across family context, childhood obesity narratives, and personality development studies, linking individual weight with family and psychosocial factors [1] [3] [15].

• Nutritional biochemistry and metabolic state studies highlight fat absorption, fatty acids, and energy metabolism as core determinants; fat-deficiency and essential fatty acids, alongside starvation experiments, reveal metabolic constraints shaping obesity [16] [4] [19] [20] [12].