Taking anti-acids is a sign of a weak stomach, a weak digestive system, a weak immune system, and an early sign of disease. A strong stomach isn’t only essential for good digestion, but is essential to defend the body against invading viruses, bacteria, and other unfriendly organisms. A strong stomach will defend the body against incompletely digested food particles that could enter the bloodstream and weaken other systems and organs or trigger over reactions in the immune system such as food allergies.