In 2010, I wrote a series of blog posts on the health properties of potatoes (1, 2, 3). The evidence showed that potatoes are non-toxic, filling per calorie, remarkably nutritious, and can be eaten as almost the sole source of nutrition for extended periods of time (though I'm not recommending this). Traditional South American cultures such as the Quechua and Aymara have eaten potatoes as the major source of calories for generations without any apparent ill effects (3). This is particularly interesting since potatoes are one of the highest glycemic and most insulin-stimulating foods known.
Read more »