What is the surface area of the entire human digestive system? What is the area of the intestine? Overall, our digestive tract is about 32 m2, from lips to anus, of which about 94% is the small intestine alone!
What is sensitivity, sometimes also called hypersensitivity when it is exacerbated? I propose here an original and bushy explanation based on a multitude of observations and adventures from my own life.
Throughout History, humans have been eating acorns. Indeed, they are a nutritionally rich food. But acorn contain tannins that are harmful in high quantities. So, how were humans dealing with acorn tannins?