American men are having children at increasingly older ages, according to a new study.
The average age of new fathers has risen in recent decades, research showed.
American men are having children at increasingly older ages, according to a new study.
The average age of new fathers has risen in recent decades, research showed.
American men are having children at increasingly older ages, according to a new study.
The average age of new fathers has risen in recent decades, research showed.
Older paternal age has been associated with higher rates of miscarriage, birth defects, some cancers, schizophrenia and autism. Some experts have suggested that older sperm is more likely to have mutations that lead to disease.