Carrots are rich in vitamins, but if women eat too many carrots, it is easy to cause abnormal menstruation and lead to infertility. Excessive carotene will affect the synthesis and secretion of lutein in the ovary, and some even cause amenorrhea, anovulation or menstrual disorder. The researchers explained that the above phenomenon may be caused by carotene interfering with steroid synthesis. Therefore, the intake of carrots must be appropriate.