Usually eat watermelon often, if you do so in moderation, generally will not cause significant harm. But if you eat watermelon not only often, but also in large quantities may have certain effects on the human body, including the following aspects: watermelon is rich in water, but also contains glucose, a variety of vitamins, minerals and trace elements, as well as phytochemicals, such as carotene, lycopene, organic acids, etc.. It can quench thirst, hydrate and replenish energy, but excessive consumption may cause gastrointestinal discomfort, leading to diarrhea and indigestion. Patients who suffer from gastrointestinal diseases, such as gastritis, enteritis, etc., often eat watermelon, may not be conducive to recovery, and even aggravate the symptoms of diarrhea and bloating. At the same time, watermelon contains high sugar, if often eat a lot of watermelon, easy to suffer from caries, diabetic patients who often eat watermelon, will make poor control of blood sugar, causing the body metabolic disorders, and may even induce ketoacidosis. Patients with kidney disease, because watermelon contains a lot of water, often eat watermelon will increase the burden on the kidneys, resulting in water retention, which is not conducive to water discharge. And watermelon is cold in nature, pregnancy, menstruation women are weaker, often eat a lot of watermelon during pregnancy is likely to have adverse effects on the fetus, often eat a lot of watermelon during menstruation is prone to dysmenorrhea. Therefore, whether you can often eat watermelon, and often eat watermelon will bring harm according to personal circumstances, but also need to pay attention to ensure the intake of fruit diversity, not often eat only watermelon, it is recommended that you can also eat more other fruits, with food to meet the body’s nutritional needs.