The length of the human bhava (as well as for any animal bhava) is not fixed (unlike for the Deva and Brahma realms). See “31 Realms of Existence.”
- The “Mahāpadāna Sutta (DN 14)” states that during Buddha Vipassī’s time, the human lifespan was 80,000 years, i.e., a human living for 80,000 years on average. Thus, a human bhava can last even more.
- That sutta shows how the human lifespan can vary from 80,000 to around 100 years (during Buddha Gotama’s Sasana). I have read elsewhere (don’t remember the reference) that it can decrease to as low as 10 years.
