You are right, they are too strong for the human system, even if you feel nothing: the consequences are largely occult. This is an extract from page 56 of Deadly Harvest:

“The chili pepper, which gives Asian cooking and curries their fiery properties, was unknown before the Spanish introduced it (from Mexico) to India and Malaya 400 years ago.
“We have seen just how many new non-starchy vegetable foods have been introduced into the human diet all around the world relatively recently. Remarkably, with the exception of chili pepper, they are all beneficial entries to the diet—none of them seems to have a major adverse effect on human health. The chili pepper, however, irritates the lining of every part of the digestive tract: it causes the colon to become more porous, allowing germs, fungi, and food particles to enter the bloodstream. This can lead to a whole range of conditions from allergies to migraines to a depressed immune system.”

Can we comment on other matters too? I guess we can!