Optimal HbA1c Levels for Managing Prediabetes: What You Need to Know - Family Medicine

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Glycated hemoglobin control


Hello, my older brother, who is currently 32 years old, has prediabetes and regularly follows up on his hemoglobin A1c levels.
Initially, in 2017, his A1c level was 9.5%.
After our mother purchased health supplements from Grape King, he managed to lower his blood sugar to between 6.5% and 7%.
However, last month it rose to 7.3%.
My brother is 156.5 cm tall and weighs 68 kg.
I would like to ask what the safe range for hemoglobin A1c should be for someone with prediabetes.
Is it unreasonable to aim for an A1c level below 7%?

VINI, 20~29 year old female. Ask Date: 2021/01/07

Dr. Wu Zongying reply Family Medicine


If the glycated hemoglobin (HbA1c) level is 9.5%, it does not fall into the category of prediabetes.
It is recommended to further test fasting blood glucose or postprandial blood glucose to assist in diagnosis.
Blood sugar control must be consistent every day, with attention to diet, weight, and exercise.
Without proper management, it will be difficult to maintain a state of prediabetes.

Reply Date: 2021/01/07

More Info


Managing prediabetes effectively is crucial for preventing the progression to type 2 diabetes. The HbA1c test, which measures the average blood glucose levels over the past two to three months, is a key indicator in this management. For individuals diagnosed with prediabetes, the American Diabetes Association (ADA) recommends that the HbA1c level should ideally be below 7%. However, the target can vary based on individual circumstances, including age, overall health, and the presence of other medical conditions.

In your brother's case, his HbA1c levels have fluctuated, with a notable decrease from 9.5% in 2017 to between 6.5% and 7% after dietary changes and supplementation. However, the recent rise to 7.3% indicates a need for further intervention. The ADA defines prediabetes as an HbA1c level between 5.7% and 6.4%. Therefore, maintaining an HbA1c below 7% is not only reasonable but also advisable for someone in the prediabetic range. This target is associated with a lower risk of developing type 2 diabetes and related complications.

It's important to note that lifestyle changes play a significant role in managing blood sugar levels. Regular physical activity, a balanced diet rich in whole grains, fruits, vegetables, lean proteins, and healthy fats, along with weight management, can significantly impact HbA1c levels. For your brother, who is 156.5 cm tall and weighs 68 kg, achieving a healthy weight through diet and exercise could be beneficial. The Body Mass Index (BMI) for his height and weight suggests he is in the overweight category, which can contribute to insulin resistance and elevated blood sugar levels.

In addition to lifestyle modifications, regular monitoring of blood glucose levels is essential. This can include self-monitoring at home and regular follow-up appointments with healthcare providers to assess HbA1c levels and make necessary adjustments to his management plan. If lifestyle changes alone are insufficient, healthcare providers may consider medications to help manage blood sugar levels.

It's also worth mentioning that while dietary supplements, such as the grape king health products your mother purchased, can support overall health, they should not replace a balanced diet or medical treatment. It's crucial to discuss any supplements with a healthcare provider to ensure they are appropriate and effective for managing prediabetes.

In summary, for your brother, aiming for an HbA1c level below 7% is a reasonable and beneficial goal in managing his prediabetes. This target, combined with lifestyle changes and regular monitoring, can help prevent the progression to type 2 diabetes and improve overall health. Encouraging him to maintain a healthy lifestyle and regularly consult with healthcare professionals will be key in achieving and sustaining these goals.

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