The side effects of maca are as follows: 1. It can induce enlargement of the human thyroid gland, because maca can lead to abnormalities in human iodine metabolism and swelling of the thyroid gland. 2. It is easy to develop allergies, and the side effects of maca include causing itching, redness and swelling of the skin, rashes, and even the occurrence of khat symptoms such as digestive diarrhea, vomiting, nasal congestion, and redness of the eyes, and serious patients can experience shock and coma, so maca is not 3, Maca will lead to changes in hormone levels, especially in adolescent males and females will be affected, which will lead to increased acne and hormone disorders. 4, Maca will lead to menstrual changes in women, such as menstrual disorders or changes in sexual desire.