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You will appreciate reading this post and have a look to the wikipedia article on the evolution of aging. I make below a quick summary and apply it to your question but I think it is worth looking at the other post on aging. In short: Theory of aging Imagine a deleterious (=negative) allele (=variant of a gene) that is expressed throughout the lifetime. ...


Many factors have to be considered. First, although more women are delaying pregnancy until after the age of 35, the overall percentage of women doing so remains very small, as shown by this figure from this New York Times article. Only about 9% of pregnancies in the United States (for 2008) were in women over the age of 35. Most pregnancies still occur in ...

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