Coffee can be consumed in small amounts during menstruation and generally has no adverse effects on the body. If consumed in excess, it can easily stimulate the nerves and cause insomnia, dizziness and other uncomfortable symptoms. Coffee is a common drink, generally speaking, you can drink a small amount of coffee during menstruation. From a nutritional point of view, 100g of coffee contains 1508KJ of energy, so women who drink a small amount of coffee during menstruation will not be adversely affected by the body, and can also replenish energy for the body in time. However, as coffee contains a large amount of caffeine, it will stimulate the central nervous system to a certain extent and make it excited. Therefore, it is not recommended to drink coffee in excess during menstruation, otherwise insomnia, fatigue, dizziness and other uncomfortable symptoms will occur. To sum up, women should adjust their dietary structure during menstruation, rationalize their meals, strengthen their daily life management, need to pay attention to keep warm, ensure sufficient rest time and avoid overwork.