First, of course, you've got to introduce the food to your digestive system. What you know as eating, or ingestion, is basically just creating a bulk flow of nutrients from the outside world into your tissues.
Specific risk factors for squamous cell carcinoma include alcohol consumption, hot fluids and caustic strictures, which is the narrowing of the esophagus following ingestion of a caustic substance, like household bleach.
If you have bought these books, you're allowed to train off of them, you're allowed to ingest the content, and then that implies that then the output would be then protected by the ingestion.
Poison control centers consider accidental ingestion of poop - human or otherwise - to be minimally toxic, and doctors even prescribe poop pills from healthy people to combat hard to treat gut infections.
This causes the unintended effect of cruising for parking, where drivers end up using more gas, emitting more carbon, and causing more traffic ingestion while they search for a parking spot.
So with very heavy, regular alcohol ingestion, you can very rapidly deteriorate the function of your liver and you can go directly into liver failure, sometimes without even having cirrhosis.
One of the big goals that we have with our paper is just trying to get increased awareness that plastic ingestion is potentially a big issue for freshwater turtles.