Just starting

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I just started the low carb challenge. In the 70s I did the Atkins diet and lost 70 pounds. Then had 3 sons and life happened. I am now retired and know I need to lose weight as most of my family have weight issues. I had a brother pass at 48 with sudden death, heart attack. I have COPD and if I lose weight, breathing will be easier. I am one of the few who never smoked and I am furious that I have COPD. But what is, is and I will get better.