Our dating life explained by science

8,000 years ago females made a choice that erased 90% of males forever

(Psychryptoria) Dec. 6, 2025: Eight thousand years ago, 17 females reproduced for every 1 male. And 90% of male bloodlines vanished—not through war, plague, or disaster, but through female choice and economics.

This is the story of the "Neolithic Bottleneck (population bottleneck)." Discover how

• the agricultural revolution (spread of farming) created the most extreme genetic selection event in human history,
• why Y-chromosome diversity collapsed while female lineages stayed intact, and
• how this ancient pattern still shapes modern dating,
• wealth inequality, and
• reproductive dynamics today.

What viewers will learn:

• The genetic evidence behind the 17:1 ratio
• How agriculture transformed mating selection
• Why hypergamy became an evolutionary strategy
• The connection between ancient bottlenecks and modern dating apps
• What this means for our DNA and relationships today

How empire profits from boys

Research Notes and Key Sources:

• Karmin et al. (2015) - "A recent bottleneck of Y chromosome diversity coincides with a global change in culture" Genome Research, 25(4):459-466 https://www.ncbi.nlm.nih.gov/pmc/arti... https://pubmed.ncbi.nlm.nih.gov/25770...
• Zeng et al. (2018) - "Cultural hitchhiking and competition between patrilineal kin groups explain the post-Neolithic Y-chromosome bottleneck" Nature Communications, 9:2077 https://www.nature.com/articles/s4146... https://www.ncbi.nlm.nih.gov/pmc/arti...
• Schulting & Fibiger (2023) - "Conflict, violence, and warfare among early farmers in Northwestern Europe" PNAS, 120(16) https://www.pnas.org/doi/10.1073/pnas... https://www.ncbi.nlm.nih.gov/pmc/arti...
• von Rueden & Jaeggi (2016) - "Men's status and reproductive success in 33 nonindustrial societies: Effects of subsistence, marriage system, and reproductive strategy" PNAS, 113(39):10824-10829 https://www.pnas.org/doi/10.1073/pnas... https://www.ncbi.nlm.nih.gov/pmc/arti...
• Rivollat et al. (2023) - "Extensive pedigrees reveal the social organization of a Neolithic community" Nature, 620:600-606 https://www.nature.com/articles/s4158...

Does this change how you see modern relationships? Comment. Subscribe for more deep dives into human evolution and behavior. #NeolithicBottleneck #HumanEvolution #DatingPsychology #Hypergamy #GeneticHistory #EvolutionaryPsychology

• 8,000 Years Ago Women Made a Choice That Erased 90% of Men Forever