02/20/2026
It sounds wild, but there’s research suggesting that getting pregnant while breastfeeding may increase the chance of twins X9
Here’s the science behind it.
Breastfeeding keeps prolactin levels elevated. Prolactin suppresses ovulation, but when your cycle starts returning, hormones can fluctuate quite dramatically.
During that transition, the body can sometimes release more than one egg in a cycle. That’s called hyperovulation.
If two eggs are released and fertilised, that’s fraternal twins.
Dr. Gary Steinman, a twin researcher, proposed that the hormonal environment during breastfeeding, particularly changes in FSH (follicle-stimulating hormone) may temporarily increase the likelihood of releasing multiple eggs.
It doesn’t mean breastfeeding causes twins.
It doesn’t mean it’s guaranteed.
But the postpartum body is hormonally dynamic and occasionally, that can mean two eggs instead of one.
Biology is layered like that.
If you know a breastfeeding mama, send this to her. Biology is wild.
Would you be excited… or slightly terrified? 😅