…and they may hold the key to weight loss. Researchers in the British Medical Journal found that people who ate the most flavonoids gained the least amount of weight over the course of a study. And, ounce for ounce, plums have more flavonoids than other fruits! Those are the disease-fighting, anti-inflammatory antioxidants found in plant pigments – which give produce its color. And plums, in particular, have a lot of anthocyanins – a plant pigment that burns fat. So, to lose weight, eat plenty of plums while they’re in season.