If it feels like your body stopped playing fair after 35, you’re not imagining it. Research shows metabolic rate can drop 1–2% per decade after your 30s—and hormones, muscle loss, and stress make it worse. The good news? A restored fast metabolism is possible for both men and women when you address the real causes, not just calories. When metabolism works again, people often feel energized, lighter, clearer, and more like themselves.
After 35, your body doesn't recover from stress the same way it used to. Hormonal balance plays a huge role in how deeply you sleep and how calm your nervous system feels at night.
Your metabolism doesn’t slow because you’re “lazy” or eating wrong. It slows because your biology changes.
After 35, key hormones begin to decline:
Less hormone signaling = fewer calories burned at rest.
Even with the same diet, your body now burns less.
This is why “eat less, move more” often backfires after 35.
Fixing metabolism means repairing systems, not starving yourself.
At True Test testing guides personalized hormone and peptide protocols.
Peptides work with your body—not against it.
Fat signaling: Helps release stored fat
Appetite balance: Reduces cravings
Learn more about peptide science from our True Test Catalogue.
Protein first: Preserves muscle and boosts thermogenesis
Enough calories: Prevents metabolic slowdown
Starvation teaches your body to conserve—not burn.
Small daily habits create big metabolic change.
Deep sleep: Supports fat-burning hormones
Accountability: Helps habits stick
Confidence: You know what’s working.