In the novel, ‘The Martian’ by Andy Weir, Is it possible to live on vitamins and potatoes for an extended period of time?

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I’m poor but vitamins and minerals could be bought in my area for cheap. I plant sweet potatoes for sustenance. Can I live on it? (hypothetically) If for some reason, I find myself broke?

In: Biology
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Could you, sure, eating something is better than nothing, however remember Mark Watney, was needing high carb food because he needed to be able to do work… a super high carb, zero protein diet would not be healthy in the long run… now add beans to the diet and you have protein, and fiber, things just got a lot better

For the “broke” situation, best supplement your diet with protein-rich food like beans and lentils. Also consider adding omega-3 and 6 supplements and some olive oil. They will protect you longer than plain potatoes (carbs).

He wrote science fiction, in that the calculations & techniques are actually possible though it hasn’t been done yet. So, yes, it’s possible to survive but you wouldn’t be healthy.