But not just any man.
Chris Voigt is the head of a potato commission, and he wants to prove that the potato is nutritious enough to live off for an extended period of time.
He's eating them smashed, baked and pickled. He's even made potato lasagna.
His family does not exactly share his enthusiasm.
"I tasted it and said it's the worst thing I've tasted in my life," said Voigt's wife, Stephanie. "Chris tasted it and said this is heaven. Pretty much all I hear is he's crazy."
Voigt is also trying to convince the United Stated Department of Agriculture not to drop potatoes from the federal school lunch program, which it has been considering.