Corn is sweet and moderate in nature. Corn Lowers blood pressure and blood sugar levels. Corn also has a diuretic action and is suitable patients with diabetes, urinary stone, urgency of urination, acute and chronic cystitis and oedema due to nephritis. Corn is good for energising the digestive system and even good for constipation. Corn can lower cholesterol levels. You can eat corn in many forms from sweetcorn to cornflakes – but not with too much milk!