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How Long Does It Take For Blood Sugar To Rise


Other Ways To Treat Low Blood Sugar

How long does it take to lower blood sugar?

Glucose tabs and glucose gel may be eaten to help raise blood sugar levels, or you can administer a glucagon injection. Glucagon is a hormone that tells your liver to release stored glucose into the bloodstream.

Typically, your pancreas releases glucagon when your blood sugar levels are too low. People with diabetes can get a prescription for glucagon kits.

If they ever lose consciousness due to low blood sugar, a glucagon injection is the best way to bring their levels back to normal. Friends and family should also know how to use a kit in case of an emergency.

If you have frequent episodes of hypoglycemia, talk to your doctor. If you have diabetes, you may need to reduce your diabetes medicines, says Barnathan. You’ll also want to make sure you are eating three meals a day.;


Repeated episodes of hypoglycemia can cause hypoglycemia unawareness, where you no longer have early symptoms like shakiness or irregular heartbeat. Without those warning signs, you may not notice your blood sugar is low until more severe symptoms set in.;

If you don’t have diabetes but frequently have low blood sugar, you and your doctor need to check for other possible causes.

Whats A Blood Sugar Spike And Why Do They Happen

Postprandial spikes are temporary high blood sugars that occur soon after eating.; It is normal for the blood sugar to rise a small amount after eating, even in people who do not have diabetes.; However, if the spike is too high, it can affect your quality of life today and contribute to serious health problems down the road.

The reason blood sugar spikes is a simple matter of timing.; In a non-diabetic, consumption of carbohydrate results in two important reactions:; the immediate release of insulin into the bloodstream, and production of a hormone called amylin which keeps food from reaching the intestines too quickly.; In most cases, the after-meal blood sugar rise is barely noticeable.

However, in people with diabetes, the situation is like a baseball player with very slow reflexes batting against a pitcher who throws 98 mph fastballs: the timing is not good.; Rapid-acting insulin that is injected at mealtimes takes approximately 15 minutes to start working, 60-90 minutes to peak, and four hours or more to finish working.; And dont forget about the amylin hormone effect.; In people with diabetes, amylin is either produced in insufficient amounts or not at all.; As a result, food digests even faster than usual.; The combination of slower insulin and faster food can cause blood sugar to rise absurdly high soon after eating.; This is followed by a sharp drop once the mealtime insulin finally kicks in.


What Foods Can Help Raise Blood Sugar Fast

Because your blood sugar comes from the foods and beverages you consume, one of the easiest ways to raise your blood sugar fast is to grab a quick snack.

The American Diabetes Association recommends the 15-15 rule if your blood sugar dips below 70 mg/dL: Eat at least 15 grams of carbohydrates, then wait 15 minutes to recheck your blood sugar.

If youre still below 70 mg/dL, have another 15 grams of carbs, wait 15 minutes, and check your levels again.

Among the foods you can try for a quick blood sugar boost are:

  • a piece of fruit, like a banana, apple, or orange
  • 2 tablespoons of raisins
  • 4 Starbursts
  • 1 tablespoon of sugar in water

Foods that contain protein or fat, such as peanut butter, ice cream, and chocolate, may be helpful if your blood sugar level has dropped but isnt below 70 mg/dL.


These higher-fat foods, as well as whole-grain bread and other high-fiber foods, take longer to absorb into your bloodstream. Because of this, these foods wont raise your blood sugar as quickly as foods that have more simple carbohydrates.

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Why Do Some Babies Have Low Blood Glucose

  • In healthy full-term babies , blood glucose levels are at their lowest 1 to 2 hours after birth. After this, the levels usually start to rise as your babys body starts to use healthy sugar and fat stores.
  • Small and preterm babies may not have enough stores to keep the level up without extra feedings. These babies are most at risk for low blood glucose in the first 24;hours of life.
  • Babies whose mothers have diabetes may have trouble using their glucose stores. The normal rise in blood sugar that takes place after birth may not happen right away.
  • Babies who are large for their gestational age may have the same kind of problem during the first 12 hours of life.

Usually, low blood glucose levels will only last for a few hours, but can last up to 24-72 hours. Once your babys levels become normal, he shouldnt have further problems with hypoglycemia .

In very rare cases, low blood sugar can be severe or last a long time. If this happens, your doctor will do special tests to look for other causes.

What Causes High Morning Blood Sugars

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Two main culprits prompt morning highs: the dawn phenomenon and waning insulin. A third, much rarer cause, known as the Somogyi effect, may also be to blame.


The occasional morning high will have little impact on your A1C, a measure of your average blood sugar levels over time that indicates how well managed your diabetes is. But if those highs become consistent, they could push your A1C up into dangerous territory.

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Low Blood Sugar Levels In Diabetes

People with diabetes can have low blood sugar levels because of the medicines they have to take to manage their diabetes. They may need a hormone called or diabetes pills to help their bodies use the sugar in their blood.

These medicines help take the sugar out of the blood and get it into the body’s cells, which makes the blood sugar level go down. But sometimes it’s a tricky balancing act and blood sugar levels can get too low.

People with diabetes need to keep their blood sugars from getting too highor too low. Keeping blood sugar levels in a healthy range means balancing when and what they eat, and when they exercise with when they take medicines.


What Should Your Blood Sugar Be When You Wake Up

The goal of diabetes management is to keep your blood sugar levels as stable as possible. This means that when you wake up, you want your glucose to be in range and to stay in range throughout the day.

For many people with diabetes, the overall target glucose range is between 70 mg/dL to 180 mg/dL . To start the day strong, the American Diabetes Association recommends that you aim to wake up with glucose levels between 80 to 130 mg/dL. Talk with your healthcare team about your glucose targets.

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If The Person Is Conscious And Able To Swallow Food Or Drinks

7. Give them 15 grams of fast-acting carbohydrates to eat or drink. For example, give them glucose tablets or glucose gel, a half-cup of fruit juice or soda that contains sugar , a tablespoon of honey or corn syrup, or a tablespoon of sugar dissolved in water.

8. After 15 minutes, encourage or help them to check their blood sugar levels using a glucose meter or continuous glucose monitor if its available. If their blood sugar level is still 70 mg/dL or lower, give them another 15 grams of fast-acting carbohydrates to eat or drink. Repeat steps 1 and 2 until their blood sugar rises above 70 mg/dL.


9. When their blood sugar levels return to normal, encourage them to eat a snack or meal that contains protein and carbohydrates. For example, give them some cheese and crackers or half a sandwich to eat.This will help stabilize their blood sugar.

Preventing Low Blood Sugar Levels

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Here are some other tips to help you avoid low blood sugar levels:

  • Eat all your meals and snacks on time and try not to skip any.
  • Take the right amount of insulin.
  • If you exercise longer or harder than usual, have an extra snack.
  • Don’t take a hot bath or shower right after an insulin shot.
  • Stick to your diabetes management plan.
  • Check your blood sugar levels regularly, so you can tell if your blood sugars are running too low and your treatment plan needs adjustment.
  • Carry something containing sugar with you at all times and take it right away if you have symptoms. Don’t wait to see if the symptoms will go away they may get worse!

Alcohol and drugs can cause major problems with your blood sugar levels, so avoiding them is another way to prevent diabetes problems. Drinking can be particularly dangerous even deadly for people with diabetes because it messes up the body’s ability to keep blood glucose in a normal range. This can cause a very rapid drop in blood glucose in people with diabetes. Drug or alcohol use is also dangerous because it may affect someone’s ability to sense low blood sugar levels.

Learning how to recognize the signs of low blood sugar levels and get them back to normal is an important part of caring for diabetes. Keeping track of your blood sugar levels and recording lows when they occur will help you and your diabetes health care team keep your blood sugar levels in a healthy range.

Read Also: What Is A Normal A1c For A Non Diabetic


Increasing Blood Sugar When Fasting

Why does my blood sugar level increase from 86 to 112 mg/dl when I do a 20-hour fast? Is that normal? Im on an LCHF diet.

Thank you doctor,Alvaro

Answer:This is a normal process. When you fast, insulin levels start to drop and this triggers a surge of counter-regulatory hormones, including noradrenalin and growth hormone. This is normal, and meant to pull some of the stored sugar from the liver into the blood. If your liver is full of sugar, it may release lots of sugar into the blood, causing the blood sugar to rise.

So, yes, blood sugar may rise during fasting. The most important question to consider, though, is where this sugar came from. If you are not eating, the rise in blood sugar may only come from your own body. You are simply moving sugar from the liver to the blood. It means that there is too much sugar stored inside your body and you need to empty it out, either with LCHF diet or intermittent fasting

Dr. Jason Fung


Can You Raise Blood Sugar Without Food

Two products glucose gel and chewable glucose tablets are also effective at quickly raising blood sugar. Theyre available without a prescription and are recommended for people who experience frequent episodes of low blood sugar.

If youve had severe low blood sugar symptoms in the past, speak with your doctor about whether a glucagon kit is right for you. Glucagon is a hormone that triggers your liver to release glucose into the bloodstream.

These kits are only available by prescription. Theyre used to raise your blood sugar when youre not able to eat or drink, such as in a state of unconsciousness. Therefore, someone else, like a friend or family member, typically administers this medication for you.

An episode of low blood sugar that necessitates assistance from another person is by definition severe hypoglycemia. The kits come with a syringe and needle that can be used to inject glucagon into your arm, thigh, or buttocks.

Be sure to ask your doctor when and how to use a glucagon kit. Also, let your family and friends know how to use it and how to recognize a hypoglycemic emergency.


There are many different factors that can cause a dip in your blood sugar levels. Here are some of the most common causes.

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Is Hyperglycaemia Serious

The aim of diabetes treatment is to keep blood sugar levels as near to normal as possible.

But if you have diabetes, no matter how careful you are, you’re likely to experience hyperglycaemia at some point.

It’s important to be able to recognise and treat hyperglycaemia, as it can lead to serious health problems if left untreated.


Occasional mild episodes are not usually a cause for concern and can be treated quite easily or may return to normal on their own.

But hyperglycaemia can be potentially dangerous if blood sugar levels become very high or stay high for long periods.

Very high blood sugar levels can cause life-threatening complications, such as:

  • diabetic ketoacidosis ; a condition caused by the body needing to break down fat as a source of energy, which can lead to a diabetic coma; this tends to affect people with type 1 diabetes
  • hyperosmolar hyperglycaemic state ; severe;dehydration caused by the body;trying to get rid of excess sugar; this tends to affect people with type 2 diabetes

Regularly having high blood sugar levels for long periods of time can result in permanent damage to parts of the body such as the eyes, nerves, kidneys and blood vessels.

If you experience hyperglycaemia regularly, speak to your doctor or diabetes care team.


You may need to change your treatment or lifestyle to keep your blood sugar levels within a healthy range.

Fat Fiber And Mixed Meals

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Other foods you eat with carbohydrate-containing foods usually slow down the rise in your blood sugar levels in the post-meal period. For example, fat, fiber and protein all have the ability to delay gastric emptying. If it takes more time for your stomach to churn your food before releasing its content into your intestines where it can be absorbed, the increase in your blood sugar levels can be delayed. For example, even high-glycemic foods won’t raise your blood sugar levels as quickly if consumed with butter, extra vegetables and a serving of chicken.

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What Are The Signs & Symptoms Of Low Blood Sugar

Different people may feel low blood sugar levels differently. People with low blood sugar may:

  • feel hungry or have “hunger pains” in their stomach
  • feel shaky or like they’re trembling
  • have a rapid heart rate
  • feel sweaty or have cold, clammy skin
  • have pale, gray skin color
  • have a headache
  • have seizures or convulsions
  • lose consciousness

If you have diabetes, try to remember how your body reacts when your blood sugar levels are low. It may help you figure out when you’re having a low blood sugar level more quickly the next time.


What Is Worse For Diabetes Sugar Or Carbs

The American Diabetes Association states that all carbs will have the same ultimate effect on blood sugar, however, complex carbs, because they are a long string of sugars, will provide a slower rise in blood sugar after all, it takes some time to break down that long string of sugars into absorbable single sugars.

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Foods That Fight Diabetes

Pritikin eating means focusing on whole foods that are naturally rich in fiber and naturally low in fats, sugars, and industrial refinement. Pritikin foods are vegetables, whole fruits , whole grains, legumes such as beans and peas, nonfat dairy foods, and moderate servings of lean meat such as fish, skinless chicken breast, and game meat like bison and venison.

How Long After Eating Does Blood Sugar Return To Normal

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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.

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How To Raise Blood Sugar

For optimal body function it is necessary to maintain a certain blood sugar level, when the blood sugar levels drops below the cut off point of 3.35 mmol/l the condition is known as hypoglycaemia or low blood sugar level.

Hypoglycaemia mainly occurs in people with glucose metabolism defects and can lead to dizziness, sweating, tremor, hunger, loss of energy and other symptoms. If you suffer from hypoglycaemia you need to know how to raise your blood sugar levels in case they drop.

Glucose acts as the main fuel for the body and all the food consumed is eventually converted into glucose. Insulin helps to convert glucose into energy. Carbohydrates, fruit, vegetables, juices and sweets are instant sources of glucose.

Surprising Things That Can Spike Your Blood Sugar

When you first found out you had diabetes, you tested your blood sugar often to understand how food, activity, stress, and illness could affect your blood sugar levels. By now, youve got it figured out for the most part. But thenbam! Something makes your blood sugar zoom up. You try to adjust it with food or activity or insulin, and it dips really low. Youre on a rollercoaster no one with diabetes wants to ride.

Do you know all of these blood sugar triggers?

Knowledge is power! Look out for these surprising triggers that can send your blood sugar soaring:

  • Sunburnthe pain causes stress, and stress increases blood sugar levels.
  • Artificial sweetenersmore research needs to be done, but some studiesexternal icon show they can raise blood sugar.
  • Coffeeeven without sweetener. Some peoples blood sugar is extra-sensitive to caffeine.
  • Losing sleepeven just one night of too little sleep can make your body use insulin less efficiently.
  • Skipping breakfastgoing without that morning meal can increase blood sugar after both lunch and dinner.
  • Time of dayblood sugar can be harder to control the later it gets.
  • Dawn phenomenonpeople have a surge in hormones early in the morning whether they have diabetes or not. For people with diabetes, blood sugar can spike.
  • Dehydrationless water in your body means a higher blood sugar concentration.
  • Nose spraysome have chemicals that trigger your liver to make more blood sugar.
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