Blinky, actually eating excessive amounts of fatty foods is bad for you. I eat pizza occasionally and my total cholesterol is generally in the 120s.
Jam, you are correct. I had a rebbe in yeshiva who told us that he believed were the Sanhedrin around today they would asser smoking.
I have an additional question, unrelated to health. How can you put something in your mouth if you don’t know if it’s kosher? For that matter, how about on Pesach?