What happens when you have too much acid in your body? Many doctors, and nutritionists believe that too much acid in our bodies is the root of many common diseases. Research has shown that even mild acidosis can cause cardiovascular damage, decrease oxygen in your body, cause kidney problems such as kidney stones or gallbladder stones. So can you imagine if you have a lot of acid in your system? It is believed that too much acid has been linked to a break down in our immune system and increases free radical damage which is associated with allergies, abnormal cell mutation also known as cancer, premature aging, brittle bones, and the list goes on.