What are the causes of a protruding stomach?

Protruding Stomach: A protruding stomach may be caused by excess intra-abdominal fat (internal fat), excess subcutaneous fat (external fat), weak or stretched out abdominal muscles, hernias or intra-abdominal disease (eg. Tumors). Intra-abdominal fat can only be reduced by weight loss. Subcutaneous fat can be reduced by weight loss or liposuction. Stretched out abdominal muscles are improved with a tummy tuck.