If you are struggling to lose weight, you are in good company; billions of people around the globe are fighting an uphill battle in the weight loss war as well. Yes, billions. Studies show that two out of three Americans are overweight or obese. According to the World Health Organization, 1.6 BILLION people worldwide are overweight. Interestingly, however, in some parts of the world, there are societies of people who stay trim and healthy well into old age and beyond.