As a doctor who reverses metabolic disease daily, I see this constantly: here’s what it actually does, when it turns against you, and why your doctor is probably measuring the wrong thing.
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Visceral fat is the fat stored deep inside your abdomen around organs like the liver, pancreas, and intestines.
Unlike the fat under your skin, visceral fat is metabolically active.
And despite its bad reputation, it serves important functions.
Normal function of visceral fat:
• Cushions and protects organs • Provides a quick-access energy reserve • Produces hormones involved in appetite (leptin) and metabolism (adiponectin) • Helps coordinate immune function
In healthy amounts, it’s part of healthy physiology.
Many people think excess visceral fat causes metabolic disease.
Reality is more complicated.
A strong argument can be made that chronic hyperinsulinemia and metabolic dysfunction often come first.
Visceral fat expands as a consequence of metabolic dysfunction.
As visceral fat expands, it becomes inflamed and releases inflammatory cytokines and free fatty acids directly into the liver through the portal circulation.