Renal involvement in psychological eating disorders

Area of Science:

• Nephrology
• Psychiatry
• Internal Medicine

Background:

• Eating disorders, including anorexia nervosa (AN) and bulimia nervosa (BN), present significant public health challenges.
• These conditions manifest with severe clinical symptoms, including those affecting kidney function, yet the underlying pathophysiological mechanisms remain unclear.
• Renal involvement in eating disorders is of growing interest to nephrologists.

Purpose of the Study:

• To describe the pathophysiology, histological features, and clinical manifestations of renal involvement in anorexia nervosa and bulimia nervosa.
• To elucidate the mechanisms linking eating disorders to kidney damage.

Main Methods:

• Literature review focusing on recent research regarding anorexia nervosa and renal involvement.
• Analysis of the correlation between obesity, related factors, and kidney injury in bulimia nervosa.

Main Results:

• For AN, three primary pathways to renal involvement were identified: chronic dehydration-hypokalemia, nephrocalcinosis, and chronic rhabdomyolysis.
• For BN, a correlation was described between obesity and various proinflammatory cytokines, chemokines, growth factors, and adipokines.
• These factors have potential metabolic and hemodynamic effects on the kidney, contributing to obesity-related renal injury independently of hypertension and diabetes.

Conclusions:

• The study clarifies key pathways leading to kidney damage in anorexia nervosa.
• It highlights the role of obesity-associated factors in driving renal injury in bulimia nervosa.
• Further research into these mechanisms is essential for managing renal complications in patients with eating disorders.