– Why is it if someone puts drugs in their rectum it quickly enters their bloodstream, but people have feces in the same area all the time and it doesn’t go into their blood and make them sick?

Question

– Why is it if someone puts drugs in their rectum it quickly enters their bloodstream, but people have feces in the same area all the time and it doesn’t go into their blood and make them sick?

In: Biology

Answer 1

Your body has spent several hours trying to absorb every last nutrient it can from the food you eat, the stuff that winds up in your colon is what is left over, the stuff that can’t be absorbed.

The primary purpose of the colon is to reabsorb water, so anything water-soluble gets picked up pretty easily.