Eating a watermelon a day does not necessarily mean you will get diabetes.
Type 1 diabetes is caused by genetics and environmental and autoimmune factors, and type 2 diabetes is caused by a combination of genetics and environmental factors (over-nutrition, physical inactivity, aging, etc.), so eating a watermelon a day does not necessarily cause diabetes.
However, if you eat too much watermelon over a long period of time and are sedentary and physically inactive for a long period of time you may increase your risk of developing type 2 diabetes.
Although eating one watermelon a day does not cause diabetes, watermelon is a cool food, especially ice watermelon, which may irritate the gastrointestinal tract and cause diarrhea if eaten in excess.
In addition, eating one watermelon a day is not recommended for people with diabetes, and excessive consumption of watermelon is not conducive to blood sugar control.
It is recommended to go to the hospital if symptoms of diabetes are suspected or if blood sugar levels are abnormal. For more information on the health of food, consult a dietitian for scientific and rational consumption under the guidance of a doctor.