Pre-Diabetic- Please share any advice with me.

Hi All,

I am recently diagnosed that my A1c level of 5.7 and glucose of 99 and iron deficient by .1 g/dL. Free T3 and T4 are in normal range. I am physically active inspite of sedentry nature of my job but stressed out a lot.  Good cholesterol 28 and bad cholesterol 164.

My doc says that I am 'hypthyroidic' which is not true.

People recommend me to drink guava leaf juice that can bring down the blood sugar(Japan FDA).  I am planning to not take madication. My staple food is rice. 

For past 3 months I was in diet and I eat 1 cup of rice for 24 hrs whereas I used eat almost 3/4 of a cup for one meal. Some research says that too low carb diet can also trigger hypothyroidsm and lead to diabetis. 

I am confused. I am 45 years old male.

Pleasw advice me.