Ever notice the warnings on your car's battery? "Danger: Sulfuric acid. Protective eyewear advised. Serious injury possible."
Sulfuric acid is among the most powerful and potentially harmful acids known. Get even a dilute quantity in your eyes and you will suffer serious burns and possibly loss of eyesight. Ingest it and you can sustain fatal injury to the mouth and esophagus. Sulfuric acid's potent tendency to react with other compounds is one of the reasons that it is used in industrial processes like petroleum refining. Sulfuric acid is also a component of the harsh atmosphere of Venus.
Know what food is the most potent source of sulfuric acid in the body? Oats.
Yes: Oatmeal, oat bran, and foods made from oats (you know what breakfast cereal I'm talking about) are the most potent sources of sulfuric acid in the human diet.
Why is this important? In the transition made by humans from net-alkaline hunter-gatherer diet to net-acid modern overloaded-with-grains diet, oats tip the scales heavily towards a drop in pH, i.e., more acidic.
The more acidic your diet, the more likely it is you develop osteoporosis and other bone diseases, oxalate kidney stones, and possibly other diseases.