Should I be concerned about it when my mother and grandmother have diabetes?

Diabetes mellitus type 2 (insulin resistance)  in first degree relatives would classify you as having increased risk for developing diabetes. This means that periodic (at least annual) screening with glucose testing and HbA1c measurement are indicated. Diet and exercise are the best strategy for prevention. 

Diabetes mellitus type 1 (insulin dependent) in a first degree relative is much less likely to suggest that you are at risk for diabetes.  It usually is associated with antibodies against insulin-producing cells in the pancreas.

Can being on too much thyroid medicine cause quick episodes of dizziness?

 

Thyroid hormone  supplements can cause a rapid hear rate and palpitations if dosed in excess. Anxiety and dizziness can result from such experiences. Treatment with thyroid hormone involves selecting the right preparation and dosing it accurately with blood testing under medical supervision. Be aware that thyroid hormone products on the market may also contain other ingredients in their tablets which can cause an allergic response.

Hb1Ac test?

 My Hb1Ac is 5.2 %  do I need to take diabetic medicine?

Diabetes medications are generally reserved for people who have diagnosed diabetes mellitus (HbA1c score over 6.5 % or a  fasting glucose level over 126 mg/dl). If you have have diabetes and  have achieved the HbA1c level of 5.2 % with medication you should make changes only with the approval of your doctor. If you are interested in diabetes prevention, you do not need to rely on medication. Diet and regular exercise to control weight are widely accepted as the most important diabetes prevention measures. A HbA1c of 5.2% is considered to be in the normal range for the general population. Healthy lifestyle under proper professional supervision is the approach I recommend to all of my patients.