Drinking water during meals can dilute digestive enzymes and stomach acids and these are essential to break down the food and absorb nutrients. As it's harder to break down the food, the stomach may produce more acids, which could result in heartburn or acid reflux. This could possible put more pressure on the small intestines as well because the food is passed along from the stomach without being broken enough. In addition, drinking lots of water during meals can affect the insulin level in the blood. When people drink lots of water during meals, it's believed that it increases the blood sugar faster and it increases insulin secretory as well. The more insulin is released, the more fat it's likely to store in the body. Because the reserve of the liver and the muscles are limited, more fat is generated.
Regards, Team Topperlearning