It can be alarming when a man develops a swollen stomach that makes him look pregnant. While this can happen due to weight gain, the article explains that “it can also be a sign of an underlying medical condition,” especially if the change appears suddenly.
One of the most common medical causes is ascites, described as “a condition in which fluid builds up inside the abdomen.” When this happens, the stomach may become “round, tight, and increase in size within a short period of time,” making the swelling hard and noticeable.

Ascites is often linked to serious health problems. According to the article, it is “often linked to liver disease, excessive alcohol consumption, hepatitis, heart failure, or kidney problems.” Because of these associations, rapid abdominal enlargement should never be dismissed as a cosmetic issue.

Not all bloated bellies are caused by fluid. Visceral fat, commonly known as a “beer belly,” builds up deep inside the abdomen and pushes the stomach outward. Digestive issues can also play a role, including “severe bloating, constipation, food intolerance, or irritable bowel syndrome,” which may cause temporary but visible swelling.

Medical help is essential if a man experiences sudden or rapid abdominal swelling, ongoing discomfort, trouble breathing, leg swelling, or “yellowing of the eyes or skin.” As the article warns, a swollen belly “can be an early warning sign of a serious health problem and should never be ignored.”