Thanks, Cathryn, for sharing and for your appreciation. You have a BMI of below 18, which is on the very low end of normal. Without knowing your lifestyle habits and health history, it is difficult to make a recommendation. Whenever your doctor checks A1c, does he/she also check your fasting glucose? If so, what is the reading?
A possible contributor to elevated A1c could be a history of gestational diabetes, for example. In the absence of that, and
from my experience with clients, if your slimness goes hand in hand with low muscle mass, integrating some hypertrophic strength training may do the trick. Since you are monitoring regularly, you'll be able to notice the effects over the next 3-9 months.