glutton:
(plural: ‘gluttons‘; pronunciation: the letter ‘g’ in this word rhymes with the letter ‘g’ in the word “garden” — for the right pronunciation of glutton, please click here)

A glutton hard at work!
a person who eats too much; a gourmand;
a greedy guts;
a person who is always ready to do or take in more of something hard or unpleasant,

(undertaking risky tasks, nothing to do with eating)
They say as a child I was a glutton, seeming to be eating and eating all the time.
Contrary to the general belief that oversized people (obese) are gluttons, there are people who are thin but are gluttons when it comes to eating and drinking.
There are some restaurants which make a lot of money by feeding the gluttons more and more junk food in the name of free will and freedom to choose what a person wants to eat.
There are several medical magazines and literature for gluttons on how to suppress their urge to eat more and more or what foods to eat that satiates the urges to eat.
