Harvard aims to use CRISPR gene editing to eliminate ApoE4 variant, to reduce Alzheimer's risk. My worry: ApoE4 already spread to 14% of white population, so it can't just be a harmful mutation -- must have had hidden benefits that gene-editing could lose.https://www.technologyreview.com/s/612494/despite-crispr-baby-controversy-harvard-university-will-begin-gene-editing-sperm/ …
I think this 'prehistoric life was short' idea is an urban myth. If most people died by 35, we would have evolved to hit puberty around age 6. Many ancestors lived into their 70s, the research says:https://www.ancient-origins.net/news-evolution-human-origins/life-expectancy-myth-and-why-many-ancient-humans-lived-long-077889 …