Causes of more serious causes of abdominal pain include: 1  Bloody stools. 2  Black tarry stools. 3  Dehydration. Painful urination.  Lack of 1  urination. Abrupt cessation of bowel movements.  Dehydration.
Foods that have a high glycemic index cause an insulin response in your body that causes it to store fat. White rice has a pretty high glycemic index, so it is not recommended if you are trying to lose weight. Yes, white rice may turn out to be something that works exactly opposite to your dream of losing weight.
From a weight-loss perspective, how many calories you eat overall matters most: Having 1 cup of brown rice at dinner affects your metabolism the same way as eating 1 cup at lunch. Still, I recommend going light on carbs at dinner; since that tends to be the largest meal of the day, it's when people tend to overdo it.