Source comparison
Visceral vs Subcutaneous Fat: Why the Distinction Matters in Research
Not all fat is equal from a metabolic research perspective. The two primary adipose tissue depots have distinct properties: Visceral adipose tissue (VAT) surrounds the abdominal organs. It is more metabolically active, has higher rates of lipolysis, is more in
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- Not all fat is equal from a metabolic research perspective. The two primary adipose tissue depots have distinct properties:
- Visceral adipose tissue (VAT) surrounds the abdominal organs. It is more metabolically active, has higher rates of lipolysis, is more innervated and vascularized, and drains directly into the portal circulation supplying the liver. VAT is more highly correlated with insulin resistance, systemic inflammation, and cardiovascular risk markers than subcutaneous fat in published epidemiological and mechanistic research.
- Subcutaneous adipose tissue (SAT) sits beneath the skin. It is more metabolically inert, serves primarily as a long-term energy reserve, and is less directly linked to systemic metabolic disruption.
- When Tesamorelin research consistently shows VAT-preferential effects, this is not simply "more fat reduction" — it reflects the GH axis's specific role in visceral fat regulation. GH receptor expression is higher in visceral adipocytes than subcutaneous adipocytes, and GH's lipolytic effects (through hormone-sensitive lipase activation) are more pronounced in VAT. Tesamorelin's published data confirming this selectivity makes it the ideal research tool for studies specifically examining the GH-VAT relationship.