Generally speaking, eating betel nut will not cause infertility. Betel nut contains certain nutrients and can be used as a traditional Chinese medicine for the treatment of some cases of wormy abdominal pain and malaria, but it also contains carcinogenic substances such as betel nutin and betel nutine. A small amount of betel nut usually does not cause significant effects on the human body, but betel nut has a certain degree of addiction, long-term consumption of large amounts of betel nut may cause harm to the human body, such as red and black teeth, the formation of dental calculus, early tooth loss, mouth ulcers, gum degeneration, submucosal fibrosis, temporomandibular joint damage, digestive dysfunction, and even cause oral cancer. People who have the need to prepare for pregnancy are not recommended to consume betel nut in non-essential cases. Female infertility refers to women of childbearing age who have normal sexual intercourse without contraception and have lived together for 1 year or more without pregnancy. Common causes of female infertility include ovulation disorders due to endocrine factors, luteal insufficiency, and inflammatory reactions or diseases in organs of the reproductive system such as the vulva, vagina, uterus, ovaries and fallopian tubes. Male infertility refers to female infertility caused by male factor when the couple has lived together for 1 year or more without contraception. The common causes of male infertility are congenital abnormalities in the development of reproductive organs, genetic factors, reproductive tract infections, malignant tumors, etc., which cause low sperm count and poor quality. In addition, hormonal imbalance caused by endocrine system diseases, resulting in sexual dysfunction, and immune factors stimulating the body to produce anti-sperm antibodies can also lead to male infertility. For people with infertility, in addition to considering dietary factors, it is recommended that couples visit a regular professional hospital, do relevant examinations according to the doctor’s guidance, identify the causes and then actively cooperate with the doctor for treatment.