Hyperglycemia usually doesn't cause symptoms until blood sugar (glucose) levels are high — above 180 to 200 milligrams per deciliter (mg/dL), or 10 to 11.1 millimoles per liter (mmol/L). Symptoms of hyperglycemia develop slowly over several days or weeks.
For most people without diabetes, normal blood sugar levels are: between 4 and to 6 mmol/L before meals. less than 8 mmol/L two hours after eating.
Results are interpreted as follows: Less than 140 mg/dL (7.8 mmol/L ) after two hours is considered healthy. 140 to 199 mg/dL (7.8 mmol/L and 11.0 mmol/L ) is diagnosed as prediabetes. 200 mg/dL (11.1 mmol/L ) or higher after two hours suggests diabetes.
An A1c level of 7.4 percent is considered high and means that 7.4% of the hemoglobin in your blood is saturated with sugar. A1c levels of 6.5 or greater are considered diabetes. If your A1c is high, a combination of diet and lifestyle changes and medications can help you lower your levels.
A normal pre-prandial (before meal) blood glucose level will be between 4 and 7 mmol/l. Aftereating (post-prandial) levels should be below 9 mmol/l when tested 2 hours after a meal. When going to bed for the night, levels should be no more than 8 mmol/l.
A blood sugar level less than 140 mg/dL (7.8 mmol/L) is normal. A reading of more than 200 mg/dL (11.1 mmol/L) after two hours means you have diabetes. A reading between 140 and 199 mg/dL (7.8 mmol/L and 11.0 mmol/L) means you have prediabetes.
Missing Meals? Avoid Dangerous Blood Sugar if You Have Diabetes. Skipping a meal is typically no big deal. But if you're a person with diabetes, skipping meals or a lack of meal structure could result in dangerously low or high blood sugar levels.
Drinking plenty of water helps your kidneys flush out excess sugar. One study found that people who drink more water lower their risk for developing high blood sugar levels. And remember, water is the best. Sugary drinks elevate blood sugar by raising it even more.
Blood sugars above 200 mg/dL need to be treated immediately with insulin (and water and exercise are helpful, too), and any blood sugar over 250 mg/dL requires that you do a urine test for ketones, to make sure you're not spiraling into diabetic ketoacidosis (DKA).
When blood glucose levels are too high, the body is not processing glucose as energy; therefore, tiredness or fatigue may occur.” Fatigue can also coexist with other conditions. These include: Unhealthy lifestyle habits: Poor diet/skipping meals, lack of exercise, excessive caffeine or alcohol intake.
A growing body of evidence suggests a relationship between mood and blood-sugar, or glycemic, highs and lows. Symptoms of poor glycemic regulation have been shown to closely mirror mental health symptoms, such as irritability, anxiety, and worry. This should come as no surprise, as the brain runs primarily on glucose.
Fasting blood sugar test
Less than 100 mg/dL (5.6 mmol/L ) is normal. 100 to 125 mg/dL (5.6 to 6.9 mmol/L ) is diagnosed as prediabetes. 126 mg/dL (7.0 mmol/L ) or higher on two separate tests is diagnosed as diabetes.
Before meals : 4 to 7 mmol/L for people with type 1 or type 2 diabetes. After meals : under 9 mmol/L for people with type 1 diabetes and under 8.5mmol/L for people with type 2 diabetes.
If your blood sugar level is slightly high for a short time, emergency treatment won't be necessary. But if it continues to rise you may need to act fast to avoid developing diabetic ketoacidosis (DKA). If your blood sugar level is 15 mmol/l or more, you should check your blood or urine for ketones.
Before meals, the suggested target blood glucose range is 4.0 to 8.0 mmol/L. At 2 hours after meals, the range is 5.0 to 10.0 mmol/L.
The dawn phenomenon
In the early hours of the morning, hormones, including cortisol and growth hormone, signal the liver to boost the production of glucose, which provides energy that helps you wake up. This triggers beta cells in the pancreas to release insulin in order to keep blood glucose levels in check.
Hyperglycemia, also known as high blood sugar, is a serious problem for older adults, and it can have severe consequences when untreated. Adults over the age of 60 should try to maintain glucose levels between 100 to 140 mg/dL.
Blood sugar testing at home
In most cases, doctors ask people to measure fasting blood sugar immediately upon waking and before they have anything to eat or drink. It may also be appropriate to test blood sugar before eating or 2 hours after a meal, which is when blood sugar returns to normal levels.
If you are struggling to get up in the morning; feeling a total lack of energy or 'fogginess' or not able to perform the tasks you normally do as simply too exhausted it may be that you actually are suffering from fatigue... and it could be a side effect of your diabetes.