The answer is "yes".
Don't ask me how I know this shit.
Not only that, but--
I know it's gross and disgusting and a turn-off, but solid human body wastes are a fact of life, and can be discussed, sort of, if one practices certain, uh, delicacies.
I dunno the source of the information, but one time an "underground" newspaper in Lincoln, Nebraska, published a most interesting statistic, that the "average" person creates an "average" of 11,000 pounds of the brown stuff in his "average" lifetime.
Not only do I not know the source, but I have no idea what "average" meant in this instance, as quoted by the long-ago hippie publication.
But anyway, so the "average" human being builds 11,000 pounds of a mountain. But using the logic of "in-out," surely those who intake more expel more. I'm sure for example the late Las Vegas Leviathan constructed a couple of Mount Everest-sized mounds, and the lazy bum the Odin2005 primitive seems on his way to doing even better.
Think of the strain all this places on Mother Gaia, these monstrous mountains of solid human wastes.
Remember how the primitives revere Mother Gaia; they don't want anything bad to happen to her.
If they love Mother Gaia so much, the primitives should eat less, thus producing less to burden her.
