Senescent cells are present even in young adults (~1–2% in some tissues) but accumulate exponentially from age 40. The senescent cell burden approximately doubles every decade from 40 to 80, with an inflection point at ~60 where accumulation accelerates. Senolytic protocols should scale accordingly.

Is there such a thing as starting senolytics too early?

Quarterly natural senolytics (fisetin, quercetin) have an excellent safety record and no documented risks of starting early. Some longevity researchers suggest beginning in one's 30s for prevention, though evidence for benefits at this age is speculative.

Should I stop senolytics at a certain age?

No upper age limit has been established. Frailty trials enrolled participants up to age 85+. The risk-benefit calculation may change in the very elderly (85+) where physician oversight becomes more important.