There appears to be hippocampal neurogeneration even in old age. From "Multiple GWAS finds 187 intelligence genes and role for neurogenesis/myelination" (2018)

There appears to be hippocampal neurogeneration even in old age. From "Multiple GWAS finds 187 intelligence genes and role for neurogenesis/myelination" (2018) https://news.ycombinator.com/item?id=16337941 https://news.ycombinator.com/item?id=16337941 : > re: nurture, hippocampal plasticity and hippocampal neurogenesis also appear to be affected by dancing and omega-3,6 (which are transformed into endocannabinoids by the body): https://news.ycombinator.com/item?id=15109698 https://news.ycombinator.com/item?id=15109698 Neuroplasticity: https://en.wikipedia.org/wiki/Neuroplasticity https://en.wikipedia.org/wiki/Neuroplasticity Adult neurogenesis: https://en.wikipedia.org/wiki/Adult_neurogenesis https://en.wikipedia.org/wiki/Adult_neurogenesis When we forget, we must re-learn. By studying forgetting, we learn about learning and creativity. Forgetting curve: https://en.wikipedia.org/wiki/Forgetting_curve https://en.wikipedia.org/wiki/Forgetting_curve