Convenience stores in Japan are seeking to tap into a health boom in an aging society, offering leaner meals and, in some cases, even professional nutritional advice.Lawson Inc. in mid-January opened a pop-up shop in Marunouchi, a busy commercial district in central Tokyo, focusing on products that are low in carbohydrates found in such foods as sugary snacks, rice and bread for health-conscious businesspeople.The store offers around 250 items including bento box lunches, salads and beverages. Placards suggest nine meal combinations for specific types of customer. For example, one breakfast…READ FULL ARTICLE