2. For patients with hyperglycemia, you can eat more bitter gourd, which tastes bitter and cold, has tender meat and is rich in various nutrients, especially the content of vitamin C is the highest among all kinds of melons. Pharmacological studies have found that momordica charantia saponin contained in momordica charantia has obvious hypoglycemic effect, which not only has insulin-like effect (hence the name plant insulin), but also has the function of stimulating insulin release.