Elevated blood glucose

[Ruthiejb]

Hello Doctor, I was diagnosed with thyroiditis last year at age 57, but I'm not sure what kind.  I started out hyper which my doctor treated with beta blockers to slow my heart rate.  Then I went hypo, and I've been on 50 mcg of Synthroid for the past year.  My last TSH was 2.98.  My question is regarding blood glucose.  My last fasting test was 127.  I've always tested under 100.   I'm fearful of developing diabetes.  Is the synthroid causing my blood sugar to rise?  If so, how can I keep from developing diabetes?  I'm not overweight (5'2", 111 lbs) and have exercised my entire life.  Thank you.

[Mark Lupo, M.D.]

The thyroid is not likely contributing to the glucose.  The continued weight control and exercise are the most important defense against diabetes.

[Ruthiejb]

Hello again Doctor, I forgot to add that when my fasting glucose test came back elevated, my doctor checked my A1C and it was 5.6.  Thank you again.