Melting surface fat does not penetrate muscle. It is important to differentiate between different types of fat: 1) Subcutaneous fat, the thick hard fat layer right under the skin of many animals also called the fat cap. Most of the fat on steaks and chops are wrapped around the edge, called edge fat, and it can cause nasty flareups.
There are a variety of symptoms that you may experience with IBS such as cramping pain in your lower abdomen, bloating and gas. The cramping sensation, along with bloating and intestinal gas, can cause lower back pain if the gas and cramping are severe enough. You may also experience pain after meals or while trying to have a bowel movement.
Can it possibly be so bad that it causes chest and left arm pain? Yes: Excessive gas build up is very uncomfortable and can cause your symptoms. Stay away from gas producing food, eat slower, chew your food well. There are several over the counter anti-gas products that are safe. If you follow the above and don't get relief see a GI physician.