First, tea: during the menstrual period itself, girls will lose a lot of iron, so they should supplement iron during the menstrual period. Tea contains tannic acid, which is easy to combine with iron ions in the intestine, resulting in precipitation, which affects the absorption of iron ions by intestinal mucosa and easily causes anemia.

2. Caffeine-containing drinks: Drinking these drinks during menstruation can easily lead to breast pain, and at the same time affect mood, anxiety, irritability and emotional instability. At the same time, it can also consume vitamin B stored in the body and destroy the metabolism of carbohydrates.

Third, spicy food: The diet of menstrual girls should be light, so spicy foods such as peppers, cloves and peppers should be avoided to prevent early menstruation and menorrhagia.

Fourth, cold food: eating cold food during menstruation can easily lead to dysmenorrhea, such as crabs, snails, persimmons, watermelons and bamboo shoots. These are cold things that girls should avoid during menstruation.

5. Other foods: Menstrual girls should avoid drinking, cold drinks and soft drinks, which may easily lead to fatigue and listlessness. Because most drinks such as soda water contain phosphate, it can combine with iron in the body to produce a chemical reaction, resulting in iron not being absorbed. In addition, drinking more soda can be neutralized by sodium bicarbonate in soda and gastric juice, which reduces the digestive ability and bactericidal effect of gastric acid and affects appetite.