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Is fasting blood sugar 120 mg/dL a sign of prediabetes?

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Patient's Query

Hi doctor,

I have had diabetes for the past year. I took a home diabetes test with the kit, and it showed 120 mg/dL on an empty stomach. I have severe dryness in my mouth and a fast heartbeat.

  1. Is this a diabetic or a prediabetic stage?
  2. Also, I always feel exhausted. Are all these symptoms related to diabetes?
  3. How to treat this with diet?

Please help.

Thank you.

Answered by Dr. Vandana Andrews

Education:

MD

Professional Bio:

Dr. Vandana Andrews is a dedicated General Practitioner and Family Physician specializing in General Medicine. She has expertise in managing acute and chronic illnesses, preventive healthcare, and patient education. Skilled in treating conditions such as diabetes, hypertension, and respiratory infections, Dr. Andrews is known for her compassionate, patient-focused care. She is committed to delivering comprehensive, evidence-based medical services to individuals and families across all age groups.

This doctor is not available for online consultations on the platform anymore.

Hi,

Welcome to icliniq.com.

I understand your concern.

Having a fasting glucose test result of 120 mg/dL means that you might have prediabetes, otherwise referred to as impaired fasting glucose (IFG). In prediabetes, your blood sugar is elevated above normal, but still not at a high level to be considered type 2 diabetes.

It is extremely important to seek the advice of a medical practitioner concerning your test results and get some useful suggestions about handling your condition. The symptoms you described, including dry mouth, fast heartbeat while going up the stairs, and always feeling tired, could be associated with diabetes or prediabetes; however, a consultation with a specialist is necessary because there could be other causes of these symptoms.

The following diet tips are used for treating prediabetes:

  1. Ensure that your diet comprises a variety of fruits, vegetables, whole grains, proteins, and good fats.

  2. Consider the amount of food intake because overeating will cause obesity, which will cause an uncontrolled blood sugar level.

  3. Avoid consumption of a lot of sugary drinks and foods with high sugar content.

  4. Consume whole grains such as brown rice, quinoa, whole-grain bread, and oats.

  5. Consume more fiber from fruits, vegetables, whole grains, and beans because they may help to regulate blood sugar.

  6. Control your carbohydrate intake as carbohydrates influence blood sugar levels. Try to choose complex carbohydrates and combine them with proteins and healthy fats.

  7. Ensure that you drink enough water on a daily basis to help regulate the processes in your body.

  8. They will be able to provide you with individual recommendations about the diet you need.

In addition to diet modifications, exercising regularly, keeping a normal weight, and dealing with stress are also helpful for controlling blood glucose levels.

I hope this information will help you.

Thank you.

Medically reviewed by iCliniq medical review team
Published At July 8, 2026
Reviewed At July 8, 2026

Education:

MD

Professional Bio:

Dr. Vandana Andrews is a dedicated General Practitioner and Family Physician specializing in General Medicine. She has expertise in managing acute and chronic illnesses, preventive healthcare, and patient education. Skilled in treating conditions such as diabetes, hypertension, and respiratory infections, Dr. Andrews is known for her compassionate, patient-focused care. She is committed to delivering comprehensive, evidence-based medical services to individuals and families across all age groups.

This doctor is not available for online consultations on the platform anymore.

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Education:

MD

Professional Bio:

Dr. Vandana Andrews is a dedicated General Practitioner and Family Physician specializing in General Medicine. She has expertise in managing acute and chronic illnesses, preventive healthcare, and patient education. Skilled in treating conditions such as diabetes, hypertension, and respiratory infections, Dr. Andrews is known for her compassionate, patient-focused care. She is committed to delivering comprehensive, evidence-based medical services to individuals and families across all age groups.

This doctor is not available for online consultations on the platform anymore.

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