What is unable to have children?

Being unable to have children, also known as infertility, refers to the condition where an individual or couple cannot conceive a child after trying for a certain period, typically one year for couples under 35. This can be due to various factors, including medical conditions, hormonal imbalances, genetic issues, or age-related factors. Infertility can affect both men and women, and there are various treatments and options available, such as assisted reproductive technologies, to help those affected.