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Normal Blood Sugar 30 Minutes After Eating

Blood sugar is a very familiar term these days. With a huge amount of individuals suffering from diabetes, trying to maintain a healthy level of sugar in the blood has become one of the daily challenges many of us face. As a matter of fact, checking the normal blood sugar 30 minutes after eating is a key indicator for getting an idea of the state of diabetes and overall health.

In this article, we’ll go over the normal blood sugar, how to check it, what is the normal blood sugar after meals and how to control it.

Table of Content

What Is The Normal Blood Sugar Level?

Blood sugar level means the amount of glucose dissolved in the blood at any given time. It is an important indicator which shows the body’s overall metabolic condition. The normal range of blood sugar is from 3.5 mmol/L to 6.1 mmol/L during fasting and less than 7 mmol/L after having a meal.

If your blood sugar is higher than the normal range, it could be a sign of Diabetes Mellitus. Diabetes is the name of the condition where the body cannot properly process and absorb the glucose taken during eating, causing it to remain in the bloodstream. This can lead to many serious complications like nerve damage and loss of vision.Blood Glucose Levels

Why Is My Blood Sugar Level High?

The clinical term for high blood sugar is hyperglycemia. The most common cause of high blood sugar is Diabetes Mellitus or DM. It is a condition where the body cannot absorb glucose due to any abnormality in the production or action of a hormone called Insulin. Diabetes is mainly of two types: Type 1 and Type 2. Majority of diabetics are suffering from type 2 diabetes, caused by reduced action of Insulin.

However, blood sugar can be high for various other reasons. Illness or injury, hormone disorders, overeating, obesity, some medications can increase blood sugar levels.

How do I check blood sugar level?

Checking blood sugar level is very simple thanks to the availability of easy-to-use handheld glucometers. These consumer glucometers have made it very easy to always keep an eye on your blood sugar level. They are an absolute essential for diabetics and also for people trying to maintain their blood glucose level.

They operate by taking pin-pricks of blood onto a small electrode slip, which when inserted into the device gives a digital readout of the amount of glucose content in the blood. These devices have become extremely popular for their convenience, reliability and accuracy.

An essential laboratory test of blood glucose level is the Oral Glucose Tolerance Test or OGTT. It is a diagnostic test for DM or any glucose intolerance. Here, a blood sugar reading is taken after a 10-12 hour fast. Then another reading is taken after 2 hours after ingesting a measured amount of glucose. This test shows the body’s ability to absorb glucose, thus is a confirmatory test for DM.

Blood sugar level immediately after eating:

Blood sugar level changes rapidly according to the intake of the meal. The normal blood sugar level before eating or during fasting is between 3.5 to 6.1 mmol/L.

Normal blood sugar right after eating rises drastically as the digestive tract acts quickly to digest the food through mechanical actions, digestive enzymes and different hormones. So the blood glucose rises sharply during this time. The rate at which the blood sugar rises depends on the type of food, the amount is taken, the metabolic condition of the individual, etc.

How long after eating does blood sugar return to normal?

The blood sugar level falls back to a normal level around 1-2 hours after taking food. During this time digestion slows down and the sugar is absorbed by the tissue.

In diabetics, there can be a sudden spike in blood sugar after eating causing headache, dizziness and discomfort. This is called a post-prandial reaction. Normally, taking prescribed insulin medication can help mediate this problem.

Blood sugar level after 30 minutes:

About half an hour after a meal, the digestive tract works in full swing to digest and absorb the nutrients taken during the meal. So, the proteins, carbs and fats are broken down by different digestive enzymes and are gradually absorbed in the body.

The blood is the carrier of these nutrients and it transports them throughout the body to supply energy to the different organs. The blood glucose level at this time is generally at its peak.

How much does blood sugar increase after eating?

At this time the blood sugar level can reach 7.8 mmol/L in a healthy individual.

After the half-hour mark, the blood glucose level starts to fall as the sugar is absorbed from the blood into the cells of the body.

It’s important to check your normal blood sugar level 1 hour after eating. For example, if you find that your blood sugar is 160 mg/dL after the meal, this equates to 8.9 mmol/L which means your blood sugar is high. It’s an indication that you may need to seek medical treatment to control your blood sugar level.

Blood sugar level after 2 hours:

Another crucial time to check blood glucose level is about an hour and a half after a meal. Generally, around this time the process of digestion and absorption is near its end. So, high blood sugar during this time generally means that the body can’t process sugar properly.

In case of a normal individual, blood glucose level at this time is below 7.8 mmol/L. If the sugar level is 11.1 mmol/L or more, then the individual is considered to be diabetic.

Is 200 mg/dL blood sugar normal after eating?

200 mg/dL is equivalent to 11.1 mmol/L. After a meal, this level of blood sugar is considered high and can be a sign of Diabetes Mellitus.

How to control blood sugar level:

Maintaining blood sugar is very important in order to live a healthy and disease-free life. For diabetes patients, the doctrine of the three D’s is the best possible method to keep blood glucose under check. These three D’s are Dose, Diet and Discipline.

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Proper Dose:

Following the proper dose of prescribed medication is the first step to controlling blood sugar level. If you have diabetes, it is crucial to take your insulin timely and in the correct dose. This helps keep your blood sugar level under check.

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Diet is another very important aspect of maintaining blood glucose. A properly balanced diet goes a long way in keeping you healthy. Again, it’s essential to limit your sugar intake, so it’s advisable to avoid overly sweet food and desserts as much as possible. This is because there is a significant spike normal blood sugar level after eating sweets.


Discipline is an essential habit for anyone. But it is especially important for those living with DM. Discipline includes regular exercise, healthy lifestyle, avoiding smoking and alcohol and having control over any unhealthy and unwanted habits.

Bottom Line:

So, to sum up, at this day and age there is no excuse for not keeping track of your blood glucose level if you are a diabetic. Keeping yourself away from sugar, making a healthy routine and taking your meds punctually can help you make the most of your life without having to constantly worry about your blood sugar level.

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