I had spasms which I thought was a heart problem but turned out to be strong upper intestinal spasms due to having undiagnosed gluten sensitivity. I have both Celiac Disease and non-celiac sprue (Leaky Gut Syndrome) Not only was I sensitive to gluten (wheat, barley, rye) but had several food allergies and intolerances, several parasites, many gallstones, Candida/yeast overgrowths and bacterial overgrowths in the intestine. After I went on a gluten and cow's milk free diet the spasms decreased in intensity and sometimes I couldn't feel them at all. Constant anxiety was a problem as well as mood swings, depression. A variety of problems with gluten are described at The Gluten Syndrome website and the information pages at Celiac.com.