Can a Couple Be Reproductively Incompatible?

But, can there be genetic incompatibility between a man and a woman, which makes it impossible to have children together but not with another partner? The answer is no. The exception to this answer are the hereditary recessive disorders.

Can eggs and sperm be incompatible?

Scientists have discovered a new reason behind unexplained infertility. After sex, female eggs send out chemical signals for sperm to approach or stay away. Researchers found that female eggs show no preference for their partner's sperm compared to a random stranger.

How common is infertility in couples?

In the United States, 10% to 15% of couples are infertile. Infertility is defined as not being able to get pregnant despite having frequent, unprotected sex for at least a year for most couples. Infertility may result from an issue with either you or your partner, or a combination of factors that prevent pregnancy.