One of the benefits of atkins / low carb is that you're never hungry. You're eating fresh fish, poultry, veggies etc. so you are getting REALLY tasty food into you. But you are avoiding processed foods, sugars, starches, and other junk that we pour into ourselves.
Definitely keep up the exercise, that is a critical part of being healthy. But look into the first 2 weeks of induction to begin the low carb diet. That 'cleanses' your body of all the processed food and sugary junk that we get addicted to. Once you break that addiction, you can add grains and such back into your diet and find out how you react to them. Many people realize they are lactose intolerant or grain intolerant once they do this. Many people become intolerant to those things when they age.