GoodGuide's Peanut Butter Ratings: Which Brands Are Best and Worst?

Kettle Foods Hazelnut Butter receives top marks, while Peter Pan Creamy Peanut Butter Spread ranks worst among more than 100 peanut butter products rated by GoodGuide.

Consumer Ally has teamed up with GoodGuide, whose experts have rated more than 65,000 consumer goods -- including food, toys, personal care and household products -- using factors that include concern for the environment, personal health and social responsibility.

GoodGuide's ratings also include a brief explanation for each category, though the user can drill down into each score for more detail. The health score measures a product's potential health impact on consumers.