You can eat kelp in moderation when you have your period because it is rich in nutrients such as iodine, potassium and other trace elements, which help to replenish the nutrients lost during menstruation. Because of its rich iron content, it can also play a role in preventing anemia during menstruation. Kelp also has a laxative and detoxifying effect, which is suitable for women who are prone to constipation during their periods. However, since kelp is cold in nature, it is not recommended to consume it in large quantities during menstruation to avoid affecting the contraction of the uterus and causing abdominal pain, abnormal menstrual flow and prolonged periods. Therefore, if you want to eat kelp during your period, it is best to choose to drink it in soup with meat and bones, and it is not recommended to eat it cold or frozen. Also, women with high iodine levels or hyperthyroidism need to be cautious about eating foods with high iodine content such as kelp to avoid aggravating their condition.