The Claim
Serum levels of testosterone, dihydrotestosterone, and estradiol are interrelated and decline in parallel across the adult lifespan in Australian men, suggesting shared regulatory mechanisms or common determinants of androgen metabolism.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In Australian men, the blood levels of testosterone, dihydrotestosterone, and estradiol decrease together with age, indicating that these hormones are regulated by common biological factors.
See the scientific wording
Serum levels of testosterone, dihydrotestosterone, and estradiol are interrelated and decline in parallel across the adult lifespan in Australian men, suggesting shared regulatory mechanisms or common determinants of androgen metabolism.
As men age, the testes produce less testosterone, which leads to less conversion into dihydrotestosterone and estradiol, and the liver clears these hormones more slowly, causing all three to drop together over time.
What the research says
1 studyStudy: Age-specific population centiles for androgen status in men.
In Australian men, as they get older, their levels of testosterone, DHT, and estradiol all go down together — especially after age 80 — and heavier or shorter men tend to have lower levels of all three. This suggests these hormones are controlled by similar body processes.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.