Natural Killer Cells and Pregnancy

Category 5 of reproductive immunologic disorders is the final category we’ll discuss: Natural Killer cells

and autoantibodies. Your immune system is designed to protect you. Natural killer cells

and antibodies defend your body from cancer, viruses, and bacteria. But sometimes… protection

turns into overreaction. When natural killer cells become too active, and antibodies begin

targeting hormones or neurotransmitters, the immune system may mistakenly interfere with pregnancy.

This can lead to infertility or recurrent miscarriage. And it’s important to know—

this is not your fault. Category 5 disorders involve immune overactivity and misdirected

antibodies affecting reproduction. The good news? These conditions can be identified