People may not turn blue when they eat blueberries (except those magical Willy Wonka ones), but they do turn orange-y when they eat carrots. A lot of carrots. Probably more carrots than you’ll ever want to eat. That’s because they contain beta-carotene, a pigment also used as a food coloring agent. You can also find beta-carotene in other foods, like pumpkin, sweet potato, and—confusingly—spinach, but it’s most abundant in carrot juice.