Just started today

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Retired Us Army, 70% disabled(50% for hearing,I have none), and diabetic. Used Atkins diet to lose 176 lbs in 18 months. (I am a protein leaning eater). A year ago my chemistry in body took a turn and even on 20 carbs a day my blood sugar was always over 350. I take max meds and 90 units of insulin a day. My doctor and nutritionist wants me to eat at least 225 carbs a day and 2250 calories.I have gained about 40lbs back over last year. While all of my numbers and readings are great I would like to get back down to 210 lbs.