ソース: https://www.spectrumnews.org/news/mutations-that-arise-in-aging-sperm-add-little-to-autism-risk/ The mutations that men accumulate in their sperm as they age don’t account for most of their increased risk of having a child with autism, reports a study published today in Nature Genetics1. Instead, the researchers suggest, men who carry risk factors for the condition simply tend to have children late in life.