According to an article in the Mercury News, sperm doesn’t age well. No, I’m not talking the frozen variety, or the need to age it in oak casks. Rather, as a man become older, his sperm is more prone to genetic defects that can cause dwarfism and a greater likelihood of miscarriage. Combined with studies that have shown older men tend to have fewer, weaker sperm, the research advances the idea that a man’s age can be an important factor in a couple’s ability to conceive a healthy baby.
So, what does this say about older women/younger guys or older guys/younger women? I don’t know.
