A cruise designed for people who follow low-carbohydrate diets is teaching passengers the eating approach one woman says helped her lose weight — and keep it off — after decades of trying. Debbie Hubbs, 73, of Arizona, helped create the Low Carb Cruise after low-carb eating jump-started her weight loss .  Hubbs said this type of eating is “the only thing that ever worked for me.” “For the last 40, 50 years, that’s what’s made me feel healthy and strong,” Hubbs told Fox News Digital. “I’m 73