Blood sugar levels refer to the amount of glucose, a type of sugar, in the blood. The main fuel for the body’s cells is glucose, which comes from the food we consume. Controlling blood glucose levels is critical for good health, as having both high and low levels can have serious consequences. The body relies on a complex system of hormones, including insulin and glucagon, to regulate blood glucose levels and keep them within a healthy range. Understanding blood glucose levels is essential for anyone with diabetes or other conditions that affect glucose metabolism.

What are normal blood sugar levels?

The normal range for blood sugar levels can vary depending on factors such as age, gender, and overall health. According to the American Diabetes Association (ADA), a normal blood sugar level for a fasting adult is considered to be less than 100 mg/dL (milligrams per deciliter). After eating, blood sugar levels (also called postprandial) typically rise but should return to normal levels within 2 hours, with a peak of around 120 to 140 mg/dL.[1],[2] Blood sugar levels that consistently fall outside of these ranges may indicate a problem with glucose metabolisms, such as diabetes or hypoglycemia.

What are high blood sugar levels?

Hyperglycemia, also referred to as high blood sugar, is a condition where there is too much glucose in the blood. In general, a fasting blood sugar level of 126 mg/dL or above is considered high and may indicate diabetes. However, a fasting blood sugar level in the range of 100 to 125 mg/dL may indicate prediabetes.[3] Prediabetes is when blood sugar levels are high but not high enough to be diagnosed as diabetes. Overall, the specific threshold for high blood sugar may vary depending on individual factors such as age, gender, general lifestyle, and overall health.

What are the symptoms of having high and low blood sugar levels?[4]

The symptoms of high or low blood sugar levels can vary depending on the individual and the severity of the condition. The following are some typical signs to look out for:

1. Symptoms of high blood sugar (hyperglycemia):

  • Increased thirst
  • Frequent urination
  • Fatigue
  • Blurred vision
  • Dry mouth
  • Headache
  • Nausea and vomiting
  • Shortness of breath
  • Difficulty concentrating
  • Slow healing of cuts and wounds
  • Increased risk of infections
  • Weight loss

2. Symptoms of low blood sugar (hypoglycemia):

  • Shakiness or tremors
  • Sweating
  • Hunger
  • Dizziness or lightheadedness
  • Weakness or fatigue
  • Headache
  • Irritability or mood changes
  • Confusion or difficulty concentrating
  • Blurred vision
  • Numbness or tingling in the lips, tongue, or fingers.
  • Seizures or unconsciousness (in severe cases)

It’s important to note that some people may not experience any symptoms, or their symptoms may be mild, making it difficult to recognize a high or low blood sugar level, especially in the case of hyperglycemia. Regular blood sugar monitoring, especially for individuals with diabetes, is important to detect and manage high or low blood sugar levels.

What level of blood sugar is considered dangerous?

Blood sugar tracker

Both high and low blood sugar levels can be dangerous, and the specific threshold for danger may vary depending on individual factors such as age, gender, and overall health. In general, blood sugar levels that consistently fall outside of the normal range can increase the risk of complications and may be considered dangerous.

High blood sugar (hyperglycemia) above 200 mg/dL is generally considered to be a concern. Prolonged or severe hyperglycemia can lead to a range of complications such as nerve damage, kidney damage, vision problems, and an increased risk of heart disease and stroke.

For low blood sugar (hypoglycemia), a blood sugar level below 70 mg/dL is generally considered to be a concern. Severe or prolonged hypoglycemia can cause seizures, unconsciousness, and even death.

Blood sugar chart

Fasting After eating 2-3 Hours After Eating
Normal 80-100 170-200 120-140
Prediabetes 101-125 190-230 140-160
Diabetes 126 and above 220-300 200 and above

What are some tips for avoiding high or low blood sugar levels?[4],[5]

  • Follow a balanced diet: Eating a healthy, balanced diet that includes complex carbohydrates, fiber, lean protein, and healthy fats can help regulate blood sugar levels.
  • Monitor carbohydrate intake: Carbohydrates have the most significant impact on blood sugar levels, so monitoring your carbohydrate intake can help prevent high blood sugar levels.
  • Exercise regularly: Regular physical activity can help lower blood sugar levels by improving insulin sensitivity.
  • Take medication as prescribed: If you have diabetes or another condition that requires medication to manage blood sugar levels, make sure to take it as prescribed by your healthcare provider.
  • Check blood sugar levels regularly: Regular blood sugar monitoring can help detect and manage high or low blood sugar levels before they become a problem.
  • Manage stress: Since stress can cause blood sugar levels to rise, it can be beneficial to discover methods of managing stress, such as deep breathing exercises, yoga, or meditation.
  • Get enough sleep: Lack of sleep can affect blood sugar levels, so it’s important to get adequate rest and maintain a consistent sleep schedule.
  • Talk to your healthcare provider: If you have any concerns about your blood sugar levels or if you experience any concerning symptoms it is important to discuss these issues so proper workup and causes can be found.
  • Try taking supplements: Gluctose is a natural supplement that combines an array of natural ingredients that lower sugar levels, raise glucose metabolism, enhance energy, and can help with weight loss. Gluctose also contains cinnamon, a powerful natural ingredient that has been shown to help reduce blood sugar levels both between meals and after eating. The other key components of Gluctose (biotin, bitter melon, magnesium, and banana leaf extract) work together to help improve insulin sensitivity, increase fat burn, and protect cells from damage.

What dangers come with having elevated blood sugar?[4]

High blood sugar, also known as hyperglycemia, can increase the risk of a range of health complications. Here are some of the risks associated with high blood sugar:

  • Diabetes complications: Prolonged or poorly managed high blood sugar can cause a range of complications for individuals with diabetes, including both nerve and kidney damage, vision problems, and an increased risk of heart disease and stroke.
  • Cardiovascular disease: High blood sugar levels can damage blood vessels, leading to an increased risk of heart disease and stroke.
  • illnesses: High blood sugar levels can impair immunity, making it harder for the body to fend off illnesses. People with high blood sugar and diabetes are especially at risk of developing infections such as skin infections and urinary tract infections. Slow wound healing can also occur.
  • Diabetic ketoacidosis: In people with type 1 diabetes, high blood sugar levels combined with a lack of insulin can lead to a life-threatening condition called diabetic ketoacidosis, which requires immediate medical attention.

  • Hyperosmolar hyperglycemic state (HHS): In individuals with type 2 diabetes, high blood sugar levels can lead to a condition called hyperosmolar hyperglycemic state (HHS), which is also life-threatening and requires immediate medical attention.[6]

Why are good blood sugar levels important?

Maintaining healthy blood sugar levels is crucial for general health and well-being.

  • Prevent complications: High blood sugar levels over time can lead to a range of complications, including nerve and kidney damage, vision problems, and an increased risk of heart disease and stroke. Managing blood sugar levels can even prevent the development of type 2 diabetes.
  • Manage diabetes: For individuals with diabetes, maintaining good blood sugar levels can help manage the condition and prevent or delay the onset of complications.
  • Boost energy and mood: Good blood sugar levels can help regulate energy levels and mood. Spikes and crashes in blood sugar levels can lead to fatigue, irritability, and other mood changes.
  • Helps with overall health: Good blood sugar levels can help to maintain a healthy weight, manage blood pressure, and reduce the risk of chronic conditions such as heart disease and stroke.

Frequently Asked Questions

The normal range for blood sugar varies depending on several factors, such as the time of day and whether a person has eaten recently. Generally, a healthy fasting blood sugar level is below 100mg/dL. A fasting blood sugar level above 100 mg/dL but below 126 mg/dL may indicate impaired fasting glucose or prediabetes. A fasting blood sugar reading of 126 mg/dL or higher can indicate diabetes.

Postprandial blood sugar levels typically rise and then fall within a few hours. Two hours after a meal, a healthy blood sugar level is typically between 120 to 140 mg/dL.

It's important to note that individual blood sugar targets may vary depending on factors such as age, health status, and the presence of diabetes. Maintaining normal blood sugar levels is important for overall health and reducing the risk of complications associated with high or low blood sugar. Lifestyle changes such as maintaining a healthy diet, regular exercise, and managing stress can help manage blood sugar levels and prevent complications.

There are several lifestyle changes that can help reduce blood sugar levels:

  • Maintain a healthy diet: Eating a healthy diet rich in fiber, whole grains, fruits, and vegetables can help regulate blood sugar levels. Avoiding sugary and processed foods can also help prevent blood sugar spikes.
  • Exercise frequently: By improving insulin sensitivity, exercise can help reduce blood sugar levels. Try to engage in moderate activity most days of the week for at least 30 minutes.
  • Lose weight: If you are overweight or obese, losing weight can help improve insulin sensitivity and reduce blood sugar levels.
  • Stay hydrated: Drinking plenty of water can help reduce blood sugar levels by flushing excess glucose out of the body.
  • Manage stress: Stress can cause blood sugar levels to rise, so managing stress through activities such as meditation or yoga can be helpful.
  • Get enough sleep: Lack of sleep can increase stress hormones, which can cause blood sugar levels to rise. Sleep for 7-8 hours every night.
  • Take medications as prescribed: If you have diabetes, it's important to take medications as prescribed by your healthcare provider to help regulate blood sugar levels.

High blood sugar, or hyperglycemia, can be caused by several factors, including:

  • Diabetes: High blood sugar is a hallmark of diabetes, a chronic condition where the body is unable to produce or use insulin effectively.
  • Eating too much sugar or carbohydrates: Consuming large amounts of sugar or carbohydrates, such as from sugary drinks, candy, or bread, can cause blood sugar levels to rise quickly.
  • Lack of physical activity: Physical activity helps the body use insulin more efficiently, and a lack of activity can cause blood sugar levels to rise.
  • Some drugs: Certain drugs, including steroids, might raise blood sugar levels.
  • Stress: Stress hormones can cause blood sugar levels to rise.
  • Illness or infection: Illness or infection can cause the body to release hormones that raise blood sugar levels.
  • Hormonal imbalances: Certain hormonal imbalances, such as in the thyroid or adrenal glands, can cause blood sugar levels to rise.

Conclusion

Monitoring and maintaining healthy blood sugar levels is crucial for optimal health and well-being. Both high and low blood sugar levels can have serious consequences, including damage to organs, nerve damage, and even death. For those with diabetes, it is especially important to maintain normal blood sugar levels to avoid complications. Fortunately, there are many ways to keep blood sugar levels within a healthy range, including a healthy diet, regular exercise, adding a supplement such as Glucose and taking medication when necessary and as prescribed. By understanding blood sugar levels and taking steps to keep them in check, we can promote better health and reduce the risk of serious health problems.