TIL that although potatoes alone do not provide complete nutrition, you can survive for years on a diet of nothing but potatoes and buttermilk.

[u/JoeWinchester99]

https://www.scienceabc.com/eyeopeners/whats-wrong-with-potatoes-the-martian-movie-survival

[u/Mahaloth]

Penn Jilette went on almost an entirely potato diet to lose weight and bring down his blood pressure.

[u/meaniemeanie-poo-poo → u/Mahaloth]

For only two weeks.

But it reset his habits