there is a biological cost of HIGH hormone levels was the point, and u dont want to keep 15yo levels of hormones if goal is to live long.
and no, higher test, higher hgh for example increase IGF which of course decreases lifespan. ie smaller people live longer. increase IGF in mice they die faster very repeatedly.. If talk to anti aging they want low muscle mass low IGF in order to live longer. but yes a certain amount is needed to live half decently functional and ya if got chemically castrated and removed pineal u would waste away.
may be conflating healthy life style with hormone levels, ie if dont move, dont sleep, eat like crap and therefore have low test, than ya won't live as long..
The important role of IGF and insulin-related signaling pathways in the control of longevity of worms and insects is very well documented. In the mouse, several spontaneous or experimentally induced mutations that interfere with GH biosynthesis, GH actions, or sensitivity to IGF-I lead to...
pubmed.ncbi.nlm.nih.gov
benefits of endocrine deficits.
Longevity of mice can be increased by spontaneous or experimentally induced mutations that interfere with the biosynthesis or actions of growth hormone (GH), insulin-like growth factor 1 (IGF-1), or insulin in the adipose tissue. The effects of GH resistance and deficiency of GH (along with...
pubmed.ncbi.nlm.nih.gov
Somatotropic signaling: trade-offs between growth, reproductive development, and longevity
Growth hormone (GH) is a key determinant of postnatal growth and plays an important role in the control of metabolism and body composition. Surprisingly, deficiency in GH signaling delays aging and remarkably extends longevity in laboratory mice. In GH-deficient and GH-resistant animals, the...
pubmed.ncbi.nlm.nih.gov
end of the day its UBER complicated and even the papers discuss its still debatable mainly because hard to test in humans for a lifetime(esp healthy) I would assume aswell as not binary . but all mammal models show MORE hormones like GH IGF insulin decrease life. anyhoo, im not an endocrinologist, and SOO many things at play. Even now there is talk about maybe we don't want tooo much antioxidants as we actually need oxidation in order to kill off cancer. as with most things, balance is likely the answer, too high or too low is bad. imagine if had too low IGF/hormones wouldn't heal injuries for example and knees/hips/bonemass give out sooner, but will 'live' longer in a matrix cocoon .
basically all I was saying is the 120yo are not the 6foot 4, 250lbers.