Dear Dr. Hsiao: What tests should be done to diagnose diabetes?
When visiting a medical laboratory for tests, what should be checked? Should I test for fasting blood glucose levels, hemoglobin, or other items? Additionally, if someone has diabetes, can they consume sugar-free beverages or sugar-free soy milk? Lastly, is it true that teas that have received dual certification from national health food authorities and are said to help regulate blood lipids and prevent body fat formation are actually beneficial? Thank you, doctor!
Luka, 30~39 year old female. Ask Date: 2020/04/22
Dr. Xiao Yongxun reply Family Medicine
Dear Mr.
Luka: According to the diagnostic criteria for diabetes set by the American Diabetes Association, a.
Fasting plasma glucose level ≥126 mg/dL after fasting for more than 8 hours, b.
Plasma glucose level ≥200 mg/dL during a 2-hour oral glucose tolerance test, c.
HbA1c ≥6.5% (must not have any disproportionate hyperglycemia, and the testing method must comply with the international certification standards of NGSP and DCCT), the above a, b, and c conditions must be confirmed on two separate occasions.
d.
If there are clinical symptoms of diabetes (such as excessive thirst, frequent urination, increased appetite, weight loss, etc.), a plasma glucose level ≥200 mg/dL on any one occasion is sufficient for diagnosis.
Risk factors for developing diabetes include a family history of diabetes, obesity, hypertension, hyperlipidemia, lack of exercise, overeating, alcohol abuse, use of certain medications, poor lifestyle choices, and excessive stress.
Therefore, the current common treatment for type 2 diabetes remains dietary control, regular exercise, and medication.
Regardless of whether insulin is injected, dietary control and regular exercise must be diligently practiced, which involves lifestyle adjustments.
This is essential to prevent macrovascular diseases, including cardiovascular disease, cerebrovascular disease, and peripheral artery disease; as well as to avoid microvascular complications, including retinopathy, neuropathy, and nephropathy.
In the short term, it will also help prevent diabetic ketoacidosis and hyperglycemic hyperosmolar non-ketotic syndrome.
In practical terms, I personally recommend that you: chew your food thoroughly during meals, avoid overeating (aim for about 80% fullness), and limit high-calorie, high-fat, and high-sugar foods or beverages.
Reduce intake of high-cholesterol and trans fats (often found in creamers, butter, ghee, instant coffee, milk tea, etc.) and high fructose corn syrup (commonly found in commercial beverages, desserts, sodas, pastries, etc.).
These types of foods may be harder for the body to metabolize, may contain high calories without providing a sense of fullness, and can easily lead to increased blood sugar levels.
On the other hand, it is important to develop a habit of regular exercise, such as playing sports, jogging, swimming, or cycling; in fact, taking a good walk for 30-60 minutes after each meal can have very beneficial effects.
In terms of daily living, avoid excessive stress and ensure adequate sleep; this will help reduce the secretion of related hyperglycemic hormones and increase the secretion of leptin, aiding in weight and diabetes control.
When consuming sugar-free beverages or soy milk, be mindful of their calorie content and the amount of preservatives and artificial additives; the same consideration should apply to tea drinks, and I personally do not recommend fully trusting advertising claims.
After all, there are no shortcuts to diabetes management; it requires a synergistic effect of diet, exercise, lifestyle changes, and medication.
If you have further questions, I suggest discussing them in detail with your family physician or visiting an endocrinology clinic for care.
Reply Date: 2020/04/22
More Info
When it comes to diagnosing diabetes and providing dietary guidance, there are several essential tests and considerations to keep in mind. The American Diabetes Association outlines specific criteria for diagnosing diabetes, which include:
1. Fasting Plasma Glucose (FPG): This test measures blood sugar levels after fasting for at least 8 hours. A result of 126 mg/dL (7.0 mmol/L) or higher indicates diabetes.
2. Oral Glucose Tolerance Test (OGTT): This test involves fasting overnight and then drinking a sugary solution. Blood sugar levels are tested two hours later. A result of 200 mg/dL (11.1 mmol/L) or higher indicates diabetes.
3. Hemoglobin A1c (HbA1c): This test measures the average blood sugar levels over the past 2-3 months. An A1c of 6.5% or higher is diagnostic for diabetes. It's important to ensure that the testing method is certified by the National Glycohemoglobin Standardization Program (NGSP).
4. Random Plasma Glucose: A blood sample taken at any time of day can also be used for diagnosis if the patient has classic symptoms of hyperglycemia or hyperglycemic crisis, with a result of 200 mg/dL (11.1 mmol/L) or higher.
For individuals diagnosed with diabetes, dietary management is crucial. Regarding your question about consuming sugar-free beverages and soy milk, it is generally acceptable to consume these options, but moderation is key. Sugar-free drinks often contain artificial sweeteners, which may not significantly affect blood sugar levels. However, it’s essential to be mindful of the overall caloric intake and any additives that could impact health.
As for sugar-free soy milk, it can be a good source of protein and may be lower in carbohydrates compared to regular milk. However, always check the label for added sugars or preservatives that could affect your health.
Regarding the claims of certain teas that are marketed as beneficial for regulating blood lipids and preventing fat accumulation, it’s important to approach these claims with caution. While some studies suggest that certain herbal teas may have health benefits, such as improving metabolism or aiding in weight management, they should not be seen as a substitute for a balanced diet and regular exercise. The effectiveness of these products can vary widely, and they should be consumed as part of an overall healthy lifestyle rather than a sole solution for managing diabetes or weight.
In summary, the essential tests for diagnosing diabetes include fasting plasma glucose, oral glucose tolerance test, and hemoglobin A1c. For dietary guidance, it is crucial to focus on a balanced diet, regular physical activity, and monitoring carbohydrate intake. Sugar-free beverages and soy milk can be included in moderation, but always check for additional ingredients that may affect your health. Lastly, be cautious with health claims regarding specific products and prioritize a comprehensive approach to managing diabetes through lifestyle changes and medical advice. If you have further questions or concerns, it is advisable to consult with a healthcare professional or a registered dietitian who specializes in diabetes management.
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