A stomach ache is an alarm signal: If the intestines are damaged, chronic diseases can arise. Nuts, vegetables, meat and fish as well as legumes and local fruit should often be on the menu.

Flatulence can be very painful and is also a possible indication of intestinal inflammation. According to health expert Dr. Ulrich Strunz, unprocessed meat from naturally raised animals promotes health, especially if you eat it with vegetables rich in fiber. Meat from factory-farmed animals, especially when processed into sausage, increases the risk of cancer.