Taking birth control pills while breastfeeding will generally not lead to precocious puberty in children, but taking large quantities for a long period of time may lead to it.
Contraceptive pills contain a relatively large amount of estrogen and progesterone, breastfeeding women are not recommended to take, occasionally a small amount of contraceptive pills on the child’s impact is relatively small, generally will not cause precocious puberty.
If you take a large number of birth control pills for a long period of time during breastfeeding, the hormone components in the drug will affect the child through breast milk, leading to endocrine disorders in the body, which may trigger precocious puberty, premature growth of pubic hair in females, excessive breast development, symmetrical enlargement of the testicles in boys, and excessive growth in height and weight and accelerated skeletal maturation in both boys and girls.
Breastfeeding women should do a good job of contraception, but do not recommend the use of contraceptive pills to contraception, the use of condoms, birth control ring is safer.