To lose weight during menstruation, 1. Friends who lose weight can eat more iron food and high-protein food during menstruation, which can supplement the nutrients lost by the body. Eat more fruits and vegetables during menstruation. It is important to replenish body water and drink water in time. 2. Eat more high-fiber foods, such as vegetables, fruits, whole grains, whole wheat flour, brown rice, oats and other foods. Because eating enough high-fiber food can promote the discharge of estrogen, increase the content of magnesium in blood, regulate menstruation and soothe the nerves.