Coffee has a certain effect on women, especially those who suffer from breast hyperplasia should reduce the intake of coffee. Coffee is rich in caffeine, and caffeine will directly affect the patient’s sleep quality and women’s endocrine status; especially after drinking coffee at night, it will lead to mental stimulation, making it difficult to fall asleep at night, and ultimately inducing insomnia; in this series of effects may cause endocrine disorders, which can lead to women’s mammary gland problems, and may even aggravate the situation of breast hyperplasia. Coffee has a certain effect on women’s mammary glands, but it doesn’t mean that coffee can’t be drunk, as long as it is in moderation. However, women with breast enlargement or breast disease should reduce the consumption of coffee, such as mastitis, benign breast tumors, breast fibroids and so on. If you have any symptoms of physical discomfort, you should go to the hospital and consult a physician for guidance.