Why Do Women Live Longer Than Men?

#Science #Biology #DidYouKnow Women outlive men in almost every country on Earth — by about 5 years globally, and over 10 in Russia. This video breaks down why, using real, cited research rather than a single easy explanation. It covers a 2020 cross-species study (Xirocostas et al., Biology Letters) showing the same pattern across 229 species tied to sex chromosomes; the "unguarded X" genetics behind conditions like color blindness and Duchenne muscular dystrophy; a 2016 immunology review (Klein & Flanagan, Nature Reviews Immunology) on how estrogen and testosterone shape immune function — and the autoimmune-disease trade-off that comes with it; the "mother's curse" mitochondrial-inheritance hypothesis, demonstrated in fruit flies; the (heavily debated) historical Korean eunuch longevity study; and the very real, very large contribution of behavior — workplace deaths, homicide, and smoking. The honest answer isn't one twist ending — it's at least four real factors stacking together. #science #humanbiology #evolution #women #men #longevity #health #biology #facts #humanbody #curious #education #lifespan #medicalfacts #history #psychology #genetics #explained #interestingfacts #why