The biggest factor that makes the body resistant to change when it comes to weight loss is the pH levels of how much acid is being dumped into it. The Standard America Diet is 90 percent acidic, consisting of primarily sugar and grains. “No matter what your age, you need to train your body to burn fat as your fuel source, not sugar,” Dr. Daryl Gioffre, Founder of Alkamind and celebrity nutritionist, says.