Here is an example summary of this reading selection:

In “Can Diet Help Stop Depression and Violence?” Jurriaan Kamp argues that it can. He cites studies showing that nutritional supplements decreased violence among prisoners in Great Britain and the Netherlands, and that it increased school performance among children in England. Diet may also reduce incidents of mental and psychological disorders; countries like Iceland, Japan, and New Zealand, where fish is eaten regularly, have significantly lower levels of bi-polar disorder or depression than do countries where fish is not a dietary staple. While he acknowledges that other factors, like culture, may play a part, he claims that changing our diets could make the world a more peaceful place.

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