My hemoglobin a1c was 11.1 on 2/07. can that be lowered by losing weight and changing my eating habits? can you get rid of diabetes?

Can be: Diet change can improve glycemic control and lower hgba1c. If obese, weight loss can reduce Insulin resistance, so your body's own Insulin can better regulate your sugar level, which will also improve that #.

Weight loss is key: It sounds like you have type 2 diabetes. A hemoglobin a1c of 11.1 is very high and indicates an average sugar of around 300 (normal is 70-100 before meals). Avoiding concentrated sweets, excess starches, doing exercise and promoting weight loss is a key component of treatment. Most people with levels this high also need medication. You need to see your doctor about this.

Hb of 11.1: A hb a1c means you have a mean glucose of 272. That means it is much higher after meals. I am all for weight loss and exercise. I am also of the opinion that you need to see a endocrinologist and start some medication to get your hb a1c < 7. That should be your first priority. You probably cannot get rid of your diabetes.