When people are newly diagnosed with diabetes, one of the first questions they ask is what their blood sugar levels should be; what is normal, too high, or too low? Since everyone’s personal health history and the way their body functions is as unique as a fingerprint, it may affect how the body responds to food, medication, and other factors that influence blood sugar levels. Show
Health organizations provide guidelines for normal glucose levels in people without diabetes, which are slightly different from the normal or target levels recommended for people diagnosed with diabetes. If you have diabetes, your healthcare provider will work with you to personalize your target blood sugar levels to meet your individual health needs. This article is intended to help you get started with understanding the basic aspects of blood sugar levels, including:
When you eat, the carbohydrate in your food is broken down into a usable form of energy called glucose. Glucose — also known as sugar — enters the bloodstream and a hormone called insulin helps move it into our cells. This process lowers the amount of glucose in the bloodstream. When this process works efficiently, your muscles and organs have the fuel they need without there being too much glucose remaining in the blood. What are normal blood sugar levels?Health organizations like the American Diabetes Association (ADA) and Centers for Disease Control and Prevention (CDC) provide the following guidelines on normal blood sugar levels for people without diabetes: Fasting plasma glucoseThis blood sugar measurement is taken while you’re fasting – at least 8 hours from when you last ate – such as first thing in the morning.
After meal / 2 hour plasma glucoseThis blood sugar measurement is taken 2 hours after the start of a meal, or 2 hours after ingesting a sugary liquid during an oral glucose tolerance test.
A1CThis blood test is taken independent of when you have eaten. It measures the amount of glucose that is stuck to the hemoglobin (part of your red blood cells), which accumulates over approximately 3 months.
Normal blood sugar levels chart
Target blood sugar levels for people with diabetesPeople with diabetes have difficulty creating or using enough insulin, which is the hormone that helps convert glucose into energy. Although there is no universal blood sugar chart for everyone with diabetes, clinical organizations like the ADA and American Association of Clinical Endocrinologists (AACE) offer guidelines on target blood sugar levels as a starting point. Healthcare providers typically tailor normal blood sugar target ranges to an individual diabetes care plan. This includes considering your:
If you do not have target guidelines from your healthcare provider yet, you can use the blood sugar level charts below. This will help you get started with testing at home with a blood glucose meter and will make it easier to understand target A1C levels. Target blood sugar ranges for non-pregnant people with diabetes
Target blood sugar ranges for pregnant people with diabetesBlood sugar targets during pregnancy are lower due to hormonal influences. The ADA, AACE, and Joslin Diabetes Center have slightly different guidelines for target blood sugar levels during pregnancy. In general, pregnant women with diabetes will want to follow individual guidelines provided by their endocrinologist. The ADA recommends maintaining blood sugar levels of 95-140 mg/dL for pregnant women. However, some providers recommend an even tighter goal of blood glucose levels below 89 mg/dL before a meal and below 120 mg/dL after a meal. To keep close tabs on levels, most diabetes specialists recommend that women with diabetes during pregnancy check their blood sugar:
Track your own personal ranges with our free weekly and monthly blood sugar charts > Factors that can affect blood sugar levelsIf you have prediabetes or diabetes, you may have insulin resistance or an inability to produce insulin. This means your body has difficulty regulating blood sugar levels on its own. It’s a delicate balance to maintain, so the following list can help you familiarize yourself with factors that can cause your blood glucose levels to go up or down. Why your blood sugar level may be highBased on the ADA guidelines above, if your blood sugar is above 180 mg/dL two hours after a meal, it is considered above the normal range. What might cause your glucose or blood sugar to rise? Consider the following factors:
Why your blood sugar level may be lowIf blood sugar drops below 70 mg/dL, it is below normal levels. This can be caused by a variety of factors, such as:
If you have diabetes, keep your blood glucose meter and sources of fast-acting glucose (like glucose tabs or fruit juice) close by in case your blood sugar drops. This is especially important for people with hypoglycemia unawareness, which is a condition that causes symptoms of low blood sugar to go unnoticed. Eating balanced meals and snacks at regular times throughout the day is a big part of maintaining normal blood glucose levels. Check out our article on meal planning for diabetes to better understand the three macronutrients where calories come from and which have the biggest effect on blood sugar. Meal Planning for Diabetes: How to Optimize Your Diet [Free Meal Plan Chart] > Everyone will respond differently to certain factors, which is why it’s important to have individualized target glucose levels. To help you reach your target blood glucose goals, work with your healthcare provider to discuss modifications to your diet, physical activity, or medications, and alert them of other factors like a recent illness or stressful event. High blood sugar: hidden dangersIn the short term, high blood sugar levels can zap your energy, cause excessive thirst and urination, and blur your vision. High blood sugar levels can also lead to dehydration, dry and itchy skin, and infections. Minimizing the time spent above your target blood sugar range can help you feel your best and will help prevent complications and injury to your body. Over time, high blood sugar affects many parts of the body. Chronic high blood sugar can start to cause noticeable changes, including:
Nerve damage from high blood sugar can also cause a variety of symptoms including:
People with diabetes are often reluctant to talk about it, but nerve damage from high blood sugar can also affect sexual response and function for men and women. Don’t be embarrassed to reach out to your doctor for help in any of these areas. Checking your blood sugar frequently and taking immediate action when it is above range can reduce your risk of complications. High blood sugar chart and action planHigh blood sugar is also referred to as hyperglycemia. This happens when the body does not have enough insulin or can’t use insulin properly due to insulin resistance. The numbers below represent values in the hyperglycemic range and require action to bring levels down to a normal range.
Low blood sugar: what to watch out forHypoglycemia (low blood sugar) can occur in people with diabetes who:
Symptoms of low blood sugar include feeling weak, sweaty or clammy, confused, hungry and/or irritable. Sometimes people experience a fast heartbeat and some symptoms may make a person appear to be drunk. A severely low blood sugar can result in unconsciousness, seizures, coma or death — especially when a low occurs during the night. Low blood sugar affects many parts of the body, but the most frustrating part can be that hypoglycemia can happen anytime and anywhere — even when you think you are closely following the plan for your diabetes care. If low blood sugar is severe, people may need to go to the hospital to help raise their glucose level or miss work due to the side effects. It can happen during a date, during a business meeting, or even while driving, which is the most dangerous scenario if there is confusion or loss of consciousness while behind the wheel. It’s important to use your blood glucose meter to check your blood sugar before you drive to keep yourself and others safe. Frequent testing with your blood sugar meter and taking action when blood sugar is trending low can prevent a severe low and keep your life on track. Low blood sugar chart and action planLow blood sugar is also called hypoglycemia. The numbers below represent values in the hypoglycemic range and require action to bring blood sugar levels up into a normal range.
Anytime your symptoms don’t match the number on your blood sugar meter, repeat the test. Don’t count on your body to tell you if your blood sugar is high or low — many of the symptoms of highs and lows are similar. Discussing your unique health goals and challenges with your healthcare provider can provide customized target ranges for normal blood sugar levels and action plans based on your needs. Maintaining healthy blood sugar levels is important to your overall health, so remember to check your blood sugar frequently. Taking immediate action when blood sugar is above range can help reduce your risk of health complications, and if low, keep you safe. What is considered low blood sugar during pregnancy?What is hypoglycemia (low blood sugar)? It is when the sugar level in your blood is low. In pregnancy, a blood sugar below 60 mg/dl is too low.
Can low blood sugar affect my unborn baby?Does low blood sugar affect the baby? Mild hypoglycemia is unlikely to harm the developing baby unless it could harm the mother. In most cases, simply eating more or adjusting medication will prevent the risk of any harm. Women who have severe hypoglycemia may need to be hospitalized or monitored.
What is the normal blood sugar level for a pregnant woman chart?We suggest the following target for women testing blood glucose levels during pregnancy: Before a meal: 95 mg/dl or less. One hour after a meal: 140 mg/dl or less. Two hours after a meal: 120 mg/dl or less.
What is considered a dangerously low blood sugar level gestational diabetes?Hypoglycemia or low blood glucose. Hypoglycemia means that your blood glucose is low—generally below 60 to 80 mg/dL. Symptoms occur quickly and need to be treated as soon as possible.
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