Most causes of abdominal pain aren't worrisome, and your doctor can easily diagnose and treat the problem. Sometimes, though, it can be a sign of a serious illness. Learn which symptoms to watch out for and when you should get medical help. What Are the Most Common Causes of Abdominal Pain? Whether you've got a mild stomachache, sharp pain, or cramps, abdominal pain can have many causes. For instance, you might have indigestion, constipation, a stomach virus, or, if you're a woman, menstrual cramps. Other possible causes include:
Concern had been expressed about the possible tumor-promoting effect of quercetin. Mild constipation and hair thinning were reported by two of 260 patients taking AS195, which contains red vine leaf extract that is rich in quercetin.
1 Heart disease. 2  Some research suggests that eating foods rich in quercetin, such as tea, onions and apples, can reduce the risk of heart disease-related death in elderly men. 3  However, other early research suggests that taking a daily quercetin supplement does not improve heart disease risk factors.4  High cholesterol.uercetin is a plant pigment (flavonoid). It is found in many plants and foods, such as red wine, onions, green tea, apples, berries, Ginkgo biloba, St. John's wort, American elder, and others. Buckwheat tea has a large amount of quercetin.