Weight loss is complex – and goes beyond counting calories, according to experts. Dr. Jason Fung, a kidney specialist and author of the recent book “The Hunger Code,” said lasting weight loss requires a shift in how people understand and respond to hunger. “Most of the time, we focus on eating less or what we’re eating, but that’s not always a very good approach because it doesn’t get to the root of the problem,” he told Fox News Digital. “We eat because we’re hungry, and we stop eating when we’