This constipation can be caused by certain foods, such as rice and dairy products, mental and physical stress, and increased anal tension. Children with dehydration may also get irritable or sleepy. If the bloating or distention is associated with increased flatulence, then bacteria and excessive gas production are likely factors. There are multiple ways to diagnose giardiasis; the following is a list of tests doctors utilize to diagnose the disease. And if we're having carbonated drinks, drinking through a straw, or socializing and chatting during a meal, even more air finds its way into our bellies. Later in the disease, stools become greasy, foul smelling, and often floats. For example, if the air is in the stomach, emptying of the stomach is likely to be the problem. This would suggest that the patients were NOT producing more gas than the controls. Interestingly, however, the patients and controls produced the same total volume of gas while on the standard meal. Sorbitol, similar to fructose, is often used as a sweetener in gum and candies, too. What over-the-counter OTC products are available to soothe and cure excessive gas? During anal sex, the sphincter muscles loosen, allowing for penetration. Problem Foods to Avoid Which specialties of doctors treat excessive gas, belching, bloating, and flatulence?