Successful marketing by the diet industry would have you believe that buying superfood-rich products is the key to weight loss, long life and everlasting beauty. Exotic sounding fruit juices and pills and supplements with â€œthe next best isolated bioactive compoundâ€ can leave you wondering if eating commonly found foods is enough to keep you healthy. Weâ€™ve got good news for you: The healthiest foods you can eat are available at your nearest grocer and they may be foods you eat every day. Do you know your superfoods? Take this quiz to test your superfood IQ.