Postreproductive killer whale grandmothers improve the survival of their grandoffspring - https://www.pnas.org/doi/full/10.1073/pnas.1903844116
Do mammals have menopause? https://www.sciencedirect.com/science/article/pii/S0092867423010802
Making eggs: is it now or later? https://pmc.ncbi.nlm.nih.gov/articles/PMC5134835/
The evolution of menopause in toothed whales https://www.nature.com/articles/s41586-024-07159-9
Grandmothers and the evolution of human longevity https://pubmed.ncbi.nlm.nih.gov/12704714/
Changing life expectancy throughout history https://pmc.ncbi.nlm.nih.gov/articles/PMC2625386/
The Neurobiological Causes and Effects of Alloparenting https://pmc.ncbi.nlm.nih.gov/articles/PMC5768312/
The Grandmother Hypothesis and Human Evolution https://content.csbs.utah.edu/~hawkes/Hawkes_al00gramsHumanEvolution.pdf
Cohen, Alan A. “Female Post-Reproductive Lifespan: A General Mammalian Trait.” Biological Reviews of the Cambridge Philosophical Society 79, no. 4 (November 2004): 733–50. https://doi.org/10.1017/s1464793103006432
Hamilton, W. D. “The Moulding of Senescence by Natural Selection.” Journal of Theoretical Biology 12, no. 1 (September 1, 1966): 12–45. https://doi.org/10.1016/0022-5193(66)90184-6
Hawkes, Kristen. “Hardworking Hadza Grandmothers,” 1989. http://ereserve.library.utah.edu/Annual/ANTHR/6184/Hawkes/hard.pdf
Hawkes, Kristen, and Ken R. Smith. “Evaluating Grandmother Effects.” American Journal of Physical Anthropology 140, no. 1 (September 2009): 173–76. https://doi.org/10.1002/ajpa.21061
Huber, Susanne, and Martin Fieder. “Evidence for a Maximum ‘Shelf-Life’ of Oocytes in Mammals Suggests That Human Menopause May Be an Implication of Meiotic Arrest.” Scientific Reports 8, no. 1 (September 20, 2018): 14099. https://doi.org/10.1038/s41598-018-32502-2
Johnstone, Rufus A., and Michael A. Cant. “Evolution of Menopause.” Current Biology 29, no. 4 (February 18, 2019): R112–15. https://doi.org/10.1016/j.cub.2018.12.048
Strassmann, Beverly I., and Wendy M. Garrard. “Alternatives to the Grandmother Hypothesis: A Meta-Analysis of the Association Between Grandparental and Grandchild Survival in Patrilineal Populations.” Human Nature 22, no. 1–2 (July 2011): 201–22. https://doi.org/10.1007/s12110-011-9114-8
Takahashi, Mike, Rama S. Singh, and John Stone. “A Theory for the Origin of Human Menopause.” Frontiers in Genetics 7 (January 6, 2017). https://doi.org/10.3389/fgene.2016.00222
Ward, Eric J., Kim Parsons, Elizabeth E. Holmes, Ken C. Balcomb, and John KB Ford. “The Role of Menopause and Reproductive Senescence in a Long-Lived Social Mammal.” Frontiers in Zoology 6, no. 1 (February 3, 2009): 4. https://doi.org/10.1186/1742-9994-6-4
Watkins, Aja. “Reevaluating the Grandmother Hypothesis.” History and Philosophy of the Life Sciences 43, no. 3 (September 2021): 103. https://doi.org/10.1007/s40656-021-00455-x
Wood, Brian M., Jacob D. Negrey, Janine L. Brown, Tobias Deschner, Melissa Emery Thompson, Sholly Gunter, John C. Mitani, David P. Watts, and Kevin E. Langergraber. “Demographic and Hormonal Evidence for Menopause in Wild Chimpanzees.” Science 382, no. 6669 (October 27, 2023): eadd5473. https://doi.org/10.1126/science.add5473