Feel shaky after eating sugar

Feel shaky after eating sugar


Cream cake or donut is really tempting, eating a sweet dessert is enjoyable but may be accompanied by weakness and lightheadedness in the later hours.

Receive hypoglycemia, or postprandial hypoglycemia, sometimes called sugar crash, is caused by sudden and inappropriate drop in blood sugar level and usually occurs within the first four hours after eating a sugary meal.

If you are worried about your body shaking after eating sugar, join us.

In the following, our medical specialists will answer your common questions about postprandial hypoglycemia as well as headaches and body tremors after eating sugar and sugary foods and sugar crash in general.




Causes for feeling shaky after eating sugar

What is Receive Hypoglycemia or sugar crash?

Types of low blood sugar

Causes of Sugar Crash

What are the symptoms of sugar crash or hypoglycemia after eating?



When should I see a doctor?



Causes for feeling shaky after eating sugar

The major cause of feeling shaky after sugar is inappropriate and strong response of insulin secretion amount from pancreas and drop in blood sugar level respectively. There are some other causes that may produce the same manifestations by the same mechanism or other ways.

They include:

  • Some medication used to control diabetes
  • Stress and anxiety
  • Have history of stomach surgery or bypass surgery
  • Some rare tumor


What is Receive Hypoglycemia or sugar crash?

Conditions that occur following a drop in blood sugar within four hours of eating a sugary meal are called postprandial hypoglycemia. These conditions should be differentiated from hypoglycemia following starvation and fasting.

Some researchers have linked this sugar crush to the content of your meal and the time it takes to digest it.

If you have recurrent sugar crash and do not have diabetes, we recommend that you visit your doctor. You may need to change your diet or start special treatment under the supervision of a doctor.

The mechanism of this condition is inappropriate insulin secretion in response to sugar intake. Normally the insulin is secreted to control blood sugar level after taking meal.

But in some individuals this regulation capability fails and the blood sugar level falls as low as hypoglycemia symptoms begin.

This condition can be seen in whom with or without history of diabetes.


Types of Hypoglycemia

One with diabetes can have hypoglycemic attacks, but in someone who does not have diabetes, hypoglycemia can occur in two ways:

  1. Fasting Hypoglycemia
  2. Receive hypoglycemia or postprandial hypoglycemia or Sugar crush

Recurrence of sugar crash is very rare in person without diabetes, and researchers believe that most of the cases with recurrent attacks of sugarcane either have diabetes or are pre-diabetic.

Hypoglycemia can also occur in a person without diabetes. Drop in blood sugar is called hypoglycemia. Glucose is the main fuel of our body. Eating only sweets is not the only way to increase blood sugar.

Carbohydrates such as pasta, bread, pasta, fruits and vegetables are also high in sugar and their digestion produces glucose.


Causes of Sugar Crash

The main causes of crash sugar can be mentioned as follows:

  • Being in pre-diabetic stages:

A fasting blood sugar range between 101-116 mg/dl considered as pre-diabetic state. In this stage the blood glucose regulation fails to compensate with daily sugar intake. Inappropriate insulin secretion may lead in feeling shaky after sugar intake.

  • Having a history of gastric surgery:

Sometimes after gastric surgery, the food eaten does not take enough time to digest in the stomach, so the undigested food quickly leaves the stomach and suddenly enters the small intestine. Sudden entry of undigested sugar into small intestine may result in high amount of insulin secretion that can be the cause of hypoglycemic attacks following eating high contained sugar meals.

  • Some kind of enzyme deficiencies:

This is the rarest cause of hypoglycemia after eating. Stomach enzymes are required for digestion. In some people, deficiency of stomach enzymes causes incomplete digestion and therefore hypoglycemia.

  • Insolinoma:

Insulinoma is a rare pancreas gland tumor that produces and secrets inappropriate amount of insulin that may lead into sudden drop of blood glucose and feeling shaky after glucose intake.


What are the symptoms of sugar crash or hypoglycemia after eating?

As blood glucose level drops because of inappropriate insulin secretion or from other reasons following sugar intake, cascade of variable problems happen. Some of the most common hypoglycemic symptoms are as below:

  • Body shaking and tremor
  • Anxiety
  • Uneasiness
  • Sweating
  • Body tremors after eating sweets
  • Sweating
  • Feeling hungry
  • lightheadedness
  • dizziness
  • sleepy
  • Confusion
  • Fainting

You can experience one or more of these symptoms after eating just 15 grams of carbohydrates such as bread, pasta and sweeties.




Your clinical signs of headache, dizziness, weakness, and tremors after eating meals and sweets alone may indicate post-meal hypoglycemia.

For further investigation of recurrent attacks of hypoglycemia, your doctor will order several blood tests, depending on the condition, some of which include:

  • Measurement of blood sugar with digital glucometer:

True hypoglycemia is when blood sugar level is equal to or less than 70 mg / dL.

  • Oral Glucose Tolerance Test (OGTT):

You will be asked to drink some sugar and test for blood sugar level

  • Mix Mill Tolerance Test (MMTT):

You will be asked to eat a combination of fat, protein and glucose. Both before and after taking the proper meal, the blood sugar test is performed.

If your doctor suspects some other reason for your problme, he or she will order more specialized tests to check for diabetes, pre-diabetes or other causes. More specialized tests for measuring blood insulin may also be required.



Most cases do not require special treatment. If you have another factor such as gastric surgery, a special diet as a treatment will be recommended by your doctor.

The following methods will probably be recommended by your doctor to control and treat sugar crash according to your condition:

  • Eat small and light meals and increase the number of times you eat
  • Avoid eating foods high in glucose such as:
  • White flour
  • Pasta
  • Bread
  • Dried fruits
  • Processed foods
  • Try to have a balanced diet
  • Reduce alcohol consumption
  • Reduce caffeine consumption


When should I see a doctor?

“Feeling shaky after sugar intake” is a must see sign and it is advised to consult with  a medical expertise.

If you suffer from sugar crash and if you encounter the following conditions, you must see a doctor:

  • If you have a history of surgery
  • If you have wounds that heal late
  • Increase in water drink recently
  • Increase in urination frequencies
  • If you still have recurrent attacks of hypoglycemia despite controlling your diet



In whom that diabetes mellitus is diagnosed as the causative factor for the feeling shaky after sugar intake, poor control of diabetes will lead into many complications and problems such as the following:

  • Heart disease
  • Kidney disease
  • Oral problems
  • Leg problems
  • Nerve damage
  • Heart attacks lead to death
  • Occurrence of fatal brain strokes




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