Too bad chocolate isn't considered paleo. From the chart below, it looks like it blows away most other healthy fruits and vegetables in terms of anti-oxidant activity! Top Antioxidant Foods ORAC* Units per 100 grams Dark Chocolate 13,120 Milk Chocolate 6,740 Prunes 5,770 Raisins 2,830 Blueberries 2,400 Blackberries 2,036 Kale 1,770 Strawberries 1,540 Spinach 1,260 Raspberries 1,220 Brussel Sprouts 980 Plums 949 Alfalfa Sprouts 930 Broccoli Florets 890 Oranges 750 Red Grapes 739 Red Bell Pepper 710 Cherries 670 Onion 450 Corn 400 Eggplant 390 *ORAC (Oxygen Radical Absorbance Capacity) is a measure of the ability of the foods to subdue harmful oxygen free radicals that can damage our bodies. Source: Data from the U.S. Department of Agriculture and the Journal of the American Chemical Society