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Why is my Morning fasting Blood Sugar level high?

Morning Blood Sugar

Every Diabetic patient has always questioned why are my morning fasting blood sugar level high?  Sometimes patients experience that at night their blood sugar level is below 120 but it is higher in the morning up to 140.

If Sugar increases consistently more than 140 then it will start damaging our body organ.


What is Insulin?

Insulin is a peptide hormone (It is considered to be the main anabolic hormone of the body) produced by beta cells of the pancreatic islets. It regulates the metabolism of carbohydrates, fats, and protein by promoting the absorption of glucose from the blood into the liver, fat, and skeletal muscle cells.

In Type 1 Diabetes, the body does not produce enough insulin, whereas in Type 2 Diabetes, the body doesn’t respond to insulin.

Insulin is not necessary for food digestion and nutrition absorption but it helps to maintain sugar level in the Liver.

Whether we eat a carb or not, the Liver produces sugar, and Insulin controls those produced sugar while releasing in our body to generate energy. In simple terms, the Liver is the biggest depot of sugar and Insulin is a controller.

What is Dawn Phenomenon?

The dawn phenomenon sometimes called the dawn effect, is an observed increase in blood sugar (glucose) levels that take place in the early morning.

Features of the phenomenon : 

  1. Rise fasting sugar after 2 am is a natural phenomenon.
  2. This is because glucose is released in the blood anticipating the requirement of more energy by the body through hormones opposite to insulin.
  3. There is 120 tsp (600gm) of glucose stored as glycogen in the liver and pancreas even if half tsp is release in the blood it causes rise by 50points
  4. So the real reason for rising blood sugar is not the last meal but the release of stored glucose
  5. e.g. the Body is a factory and we want to start this factory at 8 am then we need the energy to start and it will start with blood sugar.


In our body, there are 4 main hormones who oppose insulin action in the morning – Cortisol, Growth Hormone, Glucagon, Adrenaline

1] Cortisol:- Known as the “Stress Hormones” is at its peak level every morning hence plays a role in increasing blood glucose.


2] Growth Hormones:- Important for repair, generation and promote the release of glucose into the blood


3] Glucagon:- Signal the liver to release glucose into the blood

4] Adrenaline:-Increase blood flow to the muscles and promote the release of glucose into the blood

Skeletal formula of adrenaline          Ball-and-stick model of epinephrine (adrenaline) molecule

We will see how positive actions to bring fasting sugar down :

  1. Do more exercise in the evening
  2. Take Dinner up to 8 pm
  3. Reduce Carbohydrate intake in dinner
  4. Complete 7-8 hours sleep
  5. 50% of green vegetable should take in dinner
  6. Take 2 TSP Apple Cider Vinegar in 20 TSP water before going to sleep

Note: Old Diabetic patients will take some time to bring down fasting blood sugar. 120 count is Ok and up to 140 is manageable but consistently above 140 will damage body organ slowly.






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