It is possible to breastfeed with a pituitary microadenoma. Pituitary microadenomas are adenomas less than 10 millimeters in diameter and are benign tumors that may present with symptoms such as visual disturbances, headaches, and decreased thalamic function. Pituitary microadenomas do not affect the production of milk, let alone worsen the condition due to the act of breastfeeding. Therefore, during the period of illness, feeding can be effectively adapted to the individual condition, taking into account his or her breastfeeding needs. Although normal breastfeeding does not affect tumor growth, it is prone to cause abnormal changes in lactogen secretion, leading to changes in breast milk production. Therefore, if there is no abnormality during the breastfeeding period, you can also wait until after weaning to treat the tumor. It is recommended that patients with pituitary microadenomas should also have regular checkups during the breastfeeding period, have a good personal diet, and get plenty of rest.