With its hefty helpings of red meat and dishes with names like bulgogi, Korean food is not always associated with eating light. But kimchi, a sour Korean staple made from fermented radish and cabbage, seems to help people stay in shape as they get older. That’s according to a paper published by the British Medical Journal’s BMJ Open, in which researchers claim “eating up to three daily servings of the Korean classic, kimchi, may lower men’s overall risk of obesity.” The team, from Chung Ang University and Seoul-based World Institute of Kimchi, found radish kimchi to be “linked to a lower preva…