A long-term hormone analysis of urine from chimpanzees in Uganda's Kibale National Park, involving females ranging from 14 to 67 years old, showed that female chimpanzees experience menopause at around age 50.
Notes on verification
Confirmed by multiple independent sources including the primary peer-reviewed study in Science, university press releases, and science news outlets, all corroborating the specific details of methodology, sample size, age range, and findings. [cascade flags: aggregator_dropped_primary_exists | tier=silver indep_score=0.95 clusters=3 claim_tier=notable]
Sources
- The 11 most astonishing scientific discoveries of 2023 (seed:science_and_space)
- https://newsroom.ucla.edu/releases/ucla-researcher-first-proof-menopause-wild-chimpanzees (corroboration)
- https://www.science.org/doi/10.1126/science.add5473 (corroboration)
- https://leakeyfoundation.org/wild-chimpanzees-experience-menopause/ (corroboration)