Thin-Fat Phenotype
Short answer
The thin-fat phenotype refers to normal or modest BMI with disproportionately high visceral (belly) fat and lower muscle mass, common in South Asian populati…
In one sentence for patients
- Full definition
- The thin-fat phenotype refers to normal or modest BMI with disproportionately high visceral (belly) fat and lower muscle mass, common in South Asian populations.
This pattern explains earlier diabetes and metabolic disease at lower BMI in India. ICMR and RSSDI use lower pharmacotherapy thresholds than Western guidelines. Waist circumference helps identify risk. In India, these concepts appear in RSSDI and ICMR guidance for type 2 diabetes and obesity care—always confirm details with your prescribing physician.
Learn more in our guide:
GLP-1 Explained: A Complete Guide for Indian Patients →
Medically reviewed
Dr. Ananya Mehta, MD, DM Endocrinology
Consultant Endocrinologist, India
This article has been reviewed by our medical advisory team, including endocrinologists, internal medicine specialists, and cardiologists, and is based on current scientific evidence and Indian clinical guidelines. Last reviewed: June 2026.
Last medically reviewed: Jun 15, 2026