Most men with suboptimal testosterone never know it.
They feel a slightly worse version of themselves and blame age or stress. This assessment maps your full hormonal environment in twelve questions and tells you exactly where the suppression is coming from.
- Score across 6 lifestyle dimensions and a symptom panel
- Hedged total T range estimate — no false precision
- Top 3 limiters identified from your inputs
- Ranked interventions with evidence grades
- Optional total T value tightens the estimate
Testosterone is downstream of how you live
Testosterone levels in Western men have been declining at roughly 1% per year since the 1980s — independent of aging. A 40-year-old man today has measurably lower testosterone than a 40-year-old man in 1990, age-controlled. The driver is not hormonal mystery. It is lifestyle signal.
The HPG axis — hypothalamus to pituitary to Leydig cells — is highly sensitive to four variables: sleep quality, cortisol load, body fat percentage, and resistance-training stimulus. One week of restricted sleep reduces testosterone by 10–15%. Sustained cortisol elevation directly inhibits Leydig cell output. Visceral fat increases aromatase, converting testosterone to estradiol. Sedentary behavior removes the strongest acute upregulator available outside of pharmacology.
This is what the score is built to surface. Not whether you meet a clinical threshold — but which specific inputs in your current environment are pulling you below your individual ceiling, and what to address first.