Obesity Impacts on Cardiovascular Outcomes in Kidney Disease
Summary
Obesity exerts a complex influence on cardiovascular outcomes in kidney disease. Excess adiposity is a well-recognised driver of hypertension, insulin resistance and dyslipidaemia, accelerating glomerular hyperfiltration and progressive loss of kidney function. Paradoxically, in advanced chronic kidney disease (CKD) and dialysis populations, higher body mass index (BMI) and greater fat reserves have been associated with improved survival, a phenomenon termed the obesity paradox. Mechanistic pathways under investigation include altered cytokine profiles, enhanced haemodynamic stability and adipose-mediated toxin sequestration, which may buffer against catabolic stress, inflammation and malnutrition. Central fat distribution further modulates cardiovascular risk by promoting vascular stiffness and endothelial dysfunction, while preservation of muscle mass appears critical for long-term outcomes. Globally, rising rates of obesity compound the burden of CKD and cardiovascular disease, underscoring the need for nuanced risk stratification and personalised therapeutic approaches. A deeper understanding of adipose biology and metabolic reserve in kidney disease holds promise for novel interventions that balance the detrimental effects of obesity with potential protective mechanisms in advanced stages, ultimately informing guidelines for weight management and cardiovascular risk reduction in patients with renal impairment.
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Obesity Impacts on Cardiovascular Outcomes in Kidney Disease publication trend
The graph below shows the total number of articles in obesity impacts on cardiovascular outcomes in kidney disease across all publications each year (not limited to Nature Index journals).
Technical terms
Chronic kidney disease (CKD): A progressive loss of renal function over months or years, often classified in stages based on estimated glomerular filtration rate.
Body mass index (BMI): A metric of body weight relative to height used to categorise underweight, normal weight, overweight and obesity.
Obesity paradox: The counterintuitive observation that higher BMI confers survival advantages in advanced CKD and dialysis populations.
Adipose tissue distribution: The anatomical pattern of fat accumulation (e.g. central vs peripheral), which influences metabolic and cardiovascular risk profiles.
Dyslipidaemia: Abnormal levels or composition of lipids in the blood, contributing to atherosclerosis and cardiovascular disease in CKD patients.
References
- Lipid parameters, adipose tissue distribution and prognosis prediction in chronic kidney Disease patients. Lipids in Health and Disease (2024).
- The Obesity Paradox in Kidney Disease: How to Reconcile It With Obesity Management. Kidney International Reports (2017).
- Obesity Paradox in Advanced Kidney Disease: From Bedside to the Bench. Progress in Cardiovascular Diseases (2018).
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