Hormones
Why Your Testosterone Is Low — And It Is Not Just Age
Chronic stress, sleep disruption, and the physiological cost of running a company suppress testosterone production independently of age. Understanding the mechanism is the first step to fixing it.
Lab Interpretation
ApoB, Lp(a), and the Cardiovascular Markers Your Doctor Is Not Testing
Standard lipid panels miss the markers that actually predict cardiovascular risk. Here is what the advanced panel reveals and why it matters for executives in their 40s and 50s.
Performance
The Cortisol-Testosterone Tradeoff: Why High Stress Tanks Performance
Cortisol and testosterone compete for the same precursors. When chronic stress keeps cortisol elevated, testosterone production suffers. This is the physiology behind founder burnout.
NAD+
NAD+ Decline After 40: What It Means for Energy, Focus, and Recovery
By your 40s, NAD+ levels have dropped by more than half from their peak. Here is what that means for cellular energy metabolism — and what restoring it actually feels like.
Insulin Resistance
The Hidden Reason High Performers Crash After Lunch
HOMA-IR and fasting insulin tell a story that fasting glucose alone cannot. Subclinical insulin resistance is the most commonly missed driver of afternoon energy crashes in executives.
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