Blood Sugar Levels: Should You Be Concerned? - Family Medicine

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Blood sugar issues?


Hello doctor, I had blood and urine tests done earlier this year, and everything was normal, but my blood sugar was 91, which seems to be on the borderline of normal.
Recently, I've been sweating easily, and I'm worried that I might have diabetes.
Should I get tested again? My weight is 70 kg, my height is 165 cm, and my BMI is 25.7.
Thank you for your guidance.

Mr. Zhao, 10~19 year old female. Ask Date: 2020/11/06

Dr. Wu Zongying reply Family Medicine


Hello: Your previous blood glucose level was 91 mg/dL.
Although you have issues with being overweight and a higher BMI, it is unlikely that you will develop diabetes quickly from the beginning of the year until now.
I would like to know what your weight was at the beginning of the year; if there has not been much change in your weight, the chances of developing diabetes are lower.
The best way to prevent diabetes is to control your diet and weight, aiming to reduce your BMI to below 24, and to engage in regular exercise.
If you are unable to manage your diet effectively and cannot lose weight, then you should have regular check-ups.

Reply Date: 2020/11/06

More Info


Hello! Thank you for reaching out with your concerns regarding your blood sugar levels and overall health. Based on the information you've provided, let's break down your situation and address your worries about diabetes and blood sugar management.

Firstly, your blood sugar level of 91 mg/dL falls within the normal range. According to the American Diabetes Association (ADA), normal fasting blood glucose levels are typically below 100 mg/dL. Levels between 100 and 125 mg/dL are considered indicative of prediabetes, while levels of 126 mg/dL or higher on two separate tests suggest diabetes. Therefore, your current reading does not indicate that you have diabetes, but it is indeed on the higher end of the normal spectrum.

Your concern about sweating could be related to various factors, including anxiety, hormonal changes, or even dietary habits. It's important to consider other symptoms that may accompany your sweating, such as increased thirst, frequent urination, fatigue, or blurred vision, which are more classic indicators of diabetes. If you are experiencing any of these symptoms, it would be wise to consult with a healthcare provider for further evaluation.

Given your height (165 cm) and weight (70 kg), your Body Mass Index (BMI) is calculated to be approximately 25.7, which classifies you as overweight. Being overweight can increase the risk of developing insulin resistance, which is a precursor to type 2 diabetes. Maintaining a healthy weight through a balanced diet and regular exercise is crucial for managing blood sugar levels and reducing the risk of diabetes.

If you are concerned about your blood sugar levels and the possibility of developing diabetes, it may be beneficial to undergo further testing. A hemoglobin A1c test (HbA1c) can provide a more comprehensive view of your blood sugar control over the past two to three months. An HbA1c level below 5.7% is considered normal, while levels between 5.7% and 6.4% indicate prediabetes, and levels of 6.5% or higher suggest diabetes.

In addition to testing, lifestyle modifications can significantly impact your blood sugar levels. Here are some recommendations:
1. Diet: Focus on a balanced diet rich in whole grains, lean proteins, healthy fats, and plenty of fruits and vegetables. Limit your intake of refined sugars and processed foods, which can cause spikes in blood sugar levels.

2. Exercise: Aim for at least 150 minutes of moderate-intensity aerobic activity each week, such as brisk walking, cycling, or swimming. Incorporating strength training exercises at least twice a week can also help improve insulin sensitivity.

3. Weight Management: If you are overweight, even a modest weight loss of 5-10% of your body weight can significantly reduce your risk of developing diabetes.

4. Regular Monitoring: Keep track of your blood sugar levels, especially if you notice any changes in your health. Regular check-ups with your healthcare provider can help you stay informed about your risk factors.

5. Stress Management: High stress can affect blood sugar levels. Consider incorporating stress-reducing activities into your routine, such as yoga, meditation, or deep-breathing exercises.

In conclusion, while your current blood sugar level is within the normal range, it is essential to remain vigilant about your health, especially given your BMI and the symptoms you are experiencing. If your concerns persist or if you notice any new symptoms, I recommend scheduling an appointment with your healthcare provider for further evaluation and personalized advice. Taking proactive steps now can help you maintain your health and prevent potential complications in the future. Thank you for your question, and I wish you the best on your health journey!

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