Pre- and Post-Meal Blood Sugar Testing for Type 2 Diabetes

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Testing your blood sugar levels after eating, referred to as postprandial testing, takes place 1-2 hours after consuming a meal.

It is employed to find out how a meal affects glucose levels. Figuring out how efficient a dose of insulin taken at mealtime is at controlling blood sugar is useful.

Individuals who take insulin normally mix a longer duration basal insulin with shorter-acting varieties to emulate the typical functioning of the pancreas.

A normally functioning pancreas produces a little bit of insulin continuously and then increases the output when the blood sugar level elevates after consuming food. In the absence of diabetes, this is the regular cycle.

Lots of people with diabetes, particularly type 1 diabetes, will inject themselves with fast-acting or rapid-acting insulin when they are eating. This assists in regulating the normal increase in blood sugar post consuming food.

These insulins act swiftly and reach their greatest level of effectiveness within a short amount of time, making them most secure and efficient when eaten in combination with food. You can measure how successful they are by checking blood sugar levels after a meal.

What Are Recommended Pre-Meal Blood Sugar Levels?

A glucose concentration in the blood that is below 140 milligrams per deciliter (7.8 millimoles per liter) is considered healthy. If a blood sugar level of over 200 mg/dL (11.1 mmol/L) is measured after two hours, it points to the existence of diabetes. The results of a test measuring blood glucose levels between 140 and 199 mg/dL (7.8 mmol/L and 11.0 mmol/L) suggest that the person being tested may have prediabetes.

The ADA has said that one should have a blood sugar level of between 80-130 mg/dL before consuming a meal. The American Association of Clinical Endocrinologists (AADE) sets more stringent objectives for levels of blood glucose than the ADA but does not recommend a definite pre-prandial level.

The AADE suggests that fasting blood glucose should be below 110 mg/dL and postprandial (after-meal) blood glucose should be lower than 140 mg/dL (as opposed to the ADA’s recommended maximum of 180 mg/dL 1-2 hours post-meal).

For women with gestational diabetes, the most stringent objectives for blood sugar levels are necessary since a heightened concentration of glucose in the bloodstream during pregnancy can result in undesired consequences for both the mother and infant. It is suggested that females with gestational diabetes should keep their blood sugar levels under 95 mg/dL before they consume a meal.

The most common kind of diabetes is Type 2 diabetes, otherwise known as non-insulin dependent diabetes. Diabetes is a condition in which the body is unable to regulate its use of glucose, a form of sugar that provides energy. Typically, insulin is a hormone that helps facilitate the movement of glucose into the cells of the body, where it is then used for energy. Individuals with Type 2 diabetes produce insulin, but their bodies are unable to absorb the sufficient amount due to the cells displaying resistance, causing the glucose to stay within the bloodstream. Type 2 diabetics may not necessarily need insulin injections to regulate their symptoms like type 1 diabetics do. However, many diabetics end up needing these insulin shots eventually. Having an abundance of glucose in the bloodstream can lead to an assortment of medical issues and make people with diabetes quite ill.

Many cases of type-2 diabetes can be regulated. However, it is the predominant source of conditions which are linked to diabetes, such as blindness, amputation of the lower legs, and long-term renal failure. There is no cure for diabetes. Diabetics should be very attentive in dealing with their illness so they can remain in the highest possible state of health and minimize the chances of medical issues arising.


Your body is composed of millions of cells. The cells need energy to function. The cells get energy by consuming the food that you consume. Whenever you take in food or liquid, a section of it is transformed into glucose. Glucose is a sugar released into your blood. Your body cells get a big portion of their energy from it. Insulin assists in the movement of glucose from the blood into the cells.

Insulin is a hormone manufactured by the beta cells located in the pancreas. The pancreas is a gland situated close to the abdomen that creates enzymes to break down food. Insulin controls the concentration of glucose in the blood constantly. Whenever one consumes a meal, the level of glucose in the blood increases. Given the raised blood sugar level, your beta cells are putting out insulin. The insulin facilitates the transition of glucose from the bloodstream to the cells. As a result, there is less glucose in the bloodstream. Your body sends out signals to prompt you to eat in order to stop your blood sugar from becoming too low. This initiates the procedure once more so that the cells of your body get the precise energy they require.


Type 2 diabetes develops as a result of an inadequate amount insulin created by the pancreas or an inability of the cells to take up said insulin. This is known as insulin resistance. Insulin resistance indicates that the body is unable to recognize or interact with the insulin that is being produced. The inability of glucose to get into the body cells prevents it from being used for energy, which leads to high levels of glucose in the blood.

2 diabetes is commonly found in individuals above 40 years of age and those with excessive weight; however it is still possible to develop the condition without being overweight. Obese kids are also beginning to suffer from type 2 diabetes, and this trend is accelerating due to the increasing issue of weight problems in young people. Individuals who have type 2 diabetes are required to maintain the disorder with their weight, nutrition, physical activity, and medication. They may take insulin or a pill that assists their organism in getting the maximum advantage from their insulin.

Many people experience pre-diabetes or impaired glucose tolerance, or impaired fasting glucose prior to the onset of type 2 diabetes. This is characterized by higher blood glucose levels than normal, yet not high enough to be categorized as type 2 diabetes. Pre-diabetes is a probable indication that you will eventually contract diabetes, and you may already be feeling the consequences of it on your health. Studies suggest that pre-diabetes can initiate long-term harm to the heart and circulatory system. Individuals who are at the pre-diabetes stage have the chance to stop the onset of type 2 diabetes or delay it if they maintain their blood sugar levels with the help of a healthy diet and physical activity. This period should be used to borrow control of their well-being and shed some pounds.

The combination of a genetic predisposition to type 2 diabetes and poor lifestyle habits (insufficient exercise, an unhealthy eating regimen, and overweight) has been noted in studies to be the likeliest cause of the ailment.

Major risk factors for type 2 diabetes include:

  • Age greater than 45 years (but remember, it is happening more in children).
  • Weight greater than 120% of desirable body weight.
  • Family history of type 2 diabetes in a first-degree relative.
  • Hispanic, Native American, African American, Asian American, or Pacific Islander descent.
  • History of a previous abnormal glucose tolerance or impaired fasting glucose test.
  • High blood pressure (>140/90 mm Hg) or high cholesterol (HDL cholesterol level < 40 mg/dL or triglyceride level >150 mg/dL).
  • History of gestational diabetes or delivering a baby with a birth weight of over 9 pounds.
  • Polycystic ovarian syndrome (which results in insulin resistance).

8 Tips to Regulate Blood Sugar Levels

Keep a blood sugar/food log.

Figuring out how blood sugar levels vary with different types of food can help modify intake to reach the desired sugar readings after consuming food. People may detect a surge in their blood sugar level after ingesting particular foods, leading them to alter their dietary choices for better glycemic regulation. This can assist you in establishing a target for your blood sugar level.

Eating consistent, balanced meals.

When you follow the Plate Method and have a meal that includes a combination of carbohydrates, protein, and fat, your blood sugar will gradually increase instead of spiking and then sharply decreasing.

Eating foods high in fiber can help keep blood sugar levels consistent, such as whole grains, fruits, vegetables, beans, nuts, and seeds. Foods with a high GI level, like sweets, white bread and rice, can cause a spike in one’s blood glucose.

Including a combination of protein and carbs is beneficial for maintaining steady blood sugar levels. Certain types of food that have a high protein concentration are meat, eggs, seafood, dairy, pulses, nuts, and seeds. Intaking protein along with carbs may minimize the occurrence of hypoglycemia (low blood glucose levels post consuming, particularly with carbs) for those who don’t have diabetes.

Exercise regularly.

Exercising can reduce insulin resistance and blood sugar levels. Muscles make use of glucose as a source of energy, so it is beneficial to do a combination of aerobic activities like walking in addition to strength training (exercises with your body weight or with weights). Adding more muscle can assist in reducing intolerance to insulin because muscle tissue utilizes glucose no matter the amount of insulin accessible.

Take medications as prescribed.

It is essential that people with diabetes comply with their prescribed diabetes medication regimen. Missing doses or taking more medication than instructed, can be damaging. Do not change your diabetes medications without discussing it with a medical professional first.

Check blood glucose regularly.

Individuals who measure their blood sugar frequently tend to maintain more consistent levels of blood sugar overall. Examining blood sugar levels after meals assists in tracking sugar tendencies and jumps in sugar.

One can also determine how their habits of living influence their blood sugar levels and can change these habits to have a better control of their blood sugar. In order to reach this goal, some individuals employ a perpetual glucose monitor. This is a miniature gadget that is placed just below the surface of your skin. This device monitors your sugar levels constantly throughout the day and night, letting you detect changes in your levels and informing you when the levels become too high or too low.

Practice good sleep hygiene.

It has been observed that improper sleeping patterns and working on a rotational schedule are linked with heightened glucose levels. Insufficient sleep or a disturbed daily cycle appears to impede how the body processes insulin, leading to difficulty in controlling glucose levels. The National Sleep Foundation also recommends several things to improve sleep hygiene, such as:

  • Limiting daytime naps.
  • Avoiding caffeine and other stimulants close to bedtime.
  • Exercising during the day.
  • Avoiding heavy, fatty, or spicy foods close to bedtime.
  • Being exposed to natural light during the day.
  • Establishing a relaxing bedtime routine.
  • Keeping the sleeping environment comfortable, e.g., temperature between 60-67 degrees, using white noise machines, etc.

Manage stress.

Research has proposed a potential connection between distress and an augmented possibility of getting type 2 diabetes. Tension activates our body’s reflex to either face a situation or flee, leading to higher glucose amounts and an inability of insulin to work correctly. Stress may initiate negative practices like poor dietary consumption, lack of sufficient sleep, and a weakened sense of personal care, which all contribute to elevated blood sugar levels. Identifying strategies to deal with stress can aid in the improvement of both psychological and bodily health.

Watch your weight.

Having a body mass index (BMI) that is categorized as overweight or obese is linked with a heightened chance of developing insulin resistance. It has been discovered in research that when those who were classified as overweight or obese decreased their weight by five percent, there was a notable decrease in their chance of Type 2 diabetes. Decreasing one’s weight can also aid in lowering high blood sugar levels for individuals who are already diagnosed with diabetes.

Counting Carbs for Better Control

Keeping track of carbohydrates and administering a precise amount of insulin at meal times can help enhance control of blood sugar levels. This strategy is ideal for people with type 2 diabetes that either have an insulin pump or take multiple shots of insulin over the course of the day. Nevertheless, regulating carb intake is similarly invaluable for those who do not need to take insulin. Most diabetics need a steady level of insulin being released all the time, as well as extra doses with meals. Carbohydrate counting allows individuals with diabetes to be more flexible when it comes to meals by assessing the grams of carbohydrates and then administering an additional dosage of insulin in accordance to it. This avoids spikes and drops in blood sugar levels and allows for more even blood sugar regulation.

Carbohydrates are the food component that has the most impact on what the post-meal blood sugar level should be, and they also decide how much insulin should be administered. In some instances, a healthcare professional such as a dietitian will create a specific proportion of insulin to carbs that need to be adhered to during meals. Your doctor might alter the proportions of insulin to carbohydrates consumed depending on the time course of your blood sugar readings; these ratios can range from 1 unit of insulin for every 5 carbohydrates consumed to 1 unit of insulin for each 30 carbs ingested or any quantity in between. Diabetics should calculate the amount of insulin they will need to take depending on how many carbs are in their meal. Diabetics have to keep track of the carb content in their food by either checking the nutrition details on the labeling of the food item or by having on-hand a reference to be able to ascertain how many carbs are in a particular food item, with a special focus on the amount in one portion. It is possible to acquire a book for this purpose or you can even get an application for your cell phone.


Maintaining healthy blood sugar levels is essential for maintaining good health and wellbeing. Maintaining your blood sugar levels in line with your goal is critical in preventing or delaying issues like visual issues, cardiovascular concerns, and renal disorders that can be the result of diabetes over the long haul.

The way you eat, how much physical activity you do, tension, medications, and numerous other things can all have an effect on blood glucose levels. One’s dietary practices can have a considerable bearing on blood sugar readings; therefore, being aware of the way distinct foodstuffs and refreshments affect blood sugar can help with managing diabetes.

The amounts of glucose in the blood prior to eating are termed preprandial, and after eating, are called postprandial. Looking at one’s blood glucose level prior to eating can indicate what impact the previous meal had on their glucose levels. Before eating, if your blood sugar levels are either too low or too high, it may indicate that you need to alter your dietary habits and/or the medicine used to manage your diabetes to ensure ideal blood sugar levels.

Choosing to live a healthier lifestyle, involving mindful eating, exercising regularly, stress reduction, and getting adequate rest can help to keep blood sugars in balance. The doses of medicines can be adjusted in order to maintain the blood sugars at the desired level before meals.


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