Moles may be related to congenital genetic or developmental defects, aging of the body, changes in hormone levels, ultraviolet radiation and other reasons, or the cause of the disease may not be clear. 1. Hereditary or developmental defects: Mistaken combination of normal tissues somewhere in the body during development, or genetic mutation during embryonic development may cause moles to grow all the time. 2. Aging of the body: with age, the body begins to decline, blood vessels and epidermis gradually aging, metabolism slows down, it may lead to moles all the time, for example, the lobular thin-walled blood vessels in the dermal papillae undergoes abnormal hyperplasia, and red moles may be formed with repeated growth. 3. Hormone level change: when the hormone level changes due to medication, pregnancy and other reasons, it may also stimulate the mole to grow repeatedly. 4. Ultraviolet radiation: When the skin is exposed to ultraviolet rays for a long time, tyrosine substances in the basal cells of the skin may be converted into melanin, thus causing moles to grow. There are many reasons why moles keep growing on your body, and many of them are not even clear. Most moles do not require treatment, but some moles that grow rapidly and have a high risk of deterioration require early treatment under the guidance of a specialist.