#6 Avoid food products that contain more than five ingredients.
The specific number you adopt is arbitrary, but the more ingredients in a packaged food, the more highly processed it probably is. Note 1: A long list of ingredients in a recipe is not the same thing: that's fine. Note 2: Some products now boast, somewhat deceptively, about their short ingredient lists. Haagen Dazs has a new line of ice cream called "five." Great- but it's still ice cream. Same goes for the three-ingredient Tostitos corn chips advertised by Frito-Lay-okay, but they're still corn chips. -Michael Pollan, Food Rules