This patient support community is for questions related to juvenile diabetes including
Celiac disease,
depression, diabetic complications, hyperglycemia /
diabetic keto-acidosis,
hypoglycemia, islet cell transplantation,
nutrition, parenting a diabetic child, pregnancy, pump therapy, school issues, and teens with
diabetes.
Some possibly relevant facts you haven't mentioned include how well your blood sugar is staying within your target range. While your diet & lifestyle sound quite healthy, it's important for you to keep your BG wihtin the target range. Excessive periods of high blood sugar can cause weight loss because the calories are excreted in the urine. Review your BG results with your doc.
Many of us with auto-immune diabetes (Type 1, that is) also have thyroid issues. I notice that you're taking synthroid. Hvae you doc check your levels in your next blood test to be sure that that's okay, too. Outofwhack thyroids can cause weight changes, too.
Lipitor is used to control cholesterol and while I've read that some folks get muscle aches from it. There is a blood test (tho' I don't recall its name) that can help detect "muscle wasting." It's ideal to get a baseline (before starting the cholesterol med) to have a reading with which to compare the "after using" readings. The reading can also be skewed by any recent bruises or injuries. Again, tell your doc your concerns &, especially if you have generalized muscle aches, ask your doc about this test.
Finally, talk to your doc about an overall checkup because weight loss may (not) be related to diabetes at all. Sometimes life (& stressors) change our appetite and/or activity very gradually, but over time, the effects accumulate. This is true both for unwanted weight gain & weight loss.