According to the anthropologist  Dr. Staffan Lindeberg, who studied the Kitavans in Papua New Guinea, sweet potatoes made up about 70-80% of the Kitavans' diet.

Probably cheaper than a McDonalds diet, and the photos of those guys (surprisingly to me) showed they were super healthy

No I'm not a vegan

Just pointing out that there are better cheaper options to get by on

I stopped trying to grow wheat for myself when I realized I could get by on tubers. 

My life got soooo much easier