We’ll spend the first few weeks of 2013 looking at issues of particular relevance to many of you as the new year unfolds. Today, the first working day of the year, we start our Happy, Healthy New Year — heretofore shorthanded to HHNY — segments with what’s likely at the top of most of your lists: losing weight. I originally wrote the following for the Charlotte Observer, where it appeared last month. Click on each section entry for more information.