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>why are there so many autistic kids nowadays
>why are so many people more likely to suffer from vaccine side effects
>why auto-immune disease is rampant
>why men bald and grey out earlier
Chromosomal DNA damage in eggs and sperm overtime leads to irreversible mutations that lead to an increased likelihood of birth defects, including increased likelihood of some birth defects and mutations appearing over extended period of time in the offspring's adulthood. Considering that the fathers' ages will vary greatly from very young to elderly, the shift in the average mother's age at the time of the first childbirth is much more likely to have long-term repercussions for sizeable populations.