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What Can Happen If Your Blood Sugar Is Too High?

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Blood Sugar: What Causes High Blood Sugar Levels In The Morning

There are two reasons why your blood sugar levels may be high in the morning – the dawn phenomenon and the Somogyi effect. The dawn phenomenon is the end result of a combination of natural body changes that occur during the sleep cycle and can be explained as follows: Your body has little need for insulin between about midnight and about 3:00 a.m. (a time when your body is sleeping most soundly). Any insulin taken in the evening causes blood sugar levels to drop sharply during this time. Then, between 3:00 a.m. and 8:00 a.m., your body starts churning out stored glucose (sugar) to prepare for the upcoming day as well as releases hormones that reduce the body's sensitivity to insulin. All of these events happen as your bedtime insulin dose is also wearing off. These events, taken together, cause your body's blood sugar levels to rise in the morning (at "dawn"). A second cause of high blood sugar levels in the morning might be due to the Somogyi effect (named after the doctor who first wrote about it). This condition is also called "rebound hyperglycemia." Although the cascade of events and end result – high blood sugar levels in the morning – is the same as in the dawn phenome Continue reading >>

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Popular Questions

  1. ChaCha64

    What is the difference between hypoglycemia and diabetic? I find myself hungry feeling hunger pains?

    ... Which I never use to. I get hungry then begin to feel shaky. I eat and still feel a little shaky. After an hour or so I get a headache. I am over weight about 20 pounds because I stopped smoking and gained extra weight. My Dr ordered a Hba1c test CBA CMA lipid BH. Duno what tests they are

  2. LU

    Hypoglycemia is high blood sugar and diabetic is low. My father has hypoglycemia and I believe I have it too. Less severe cases can sometimes be controlled by diet.I have to eat smaller meals several times a day. If I don't I get shaky and lightheaded. I don't know about the tests you mentioned. I assume it is levels they are checking for a blood test. My doctor ruled out. diabetes in a urine sample. Hope you find out what's causing your symptoms soon and hope this info helped

  3. EL ElizaJane23

    Hi Lucyb78 - I'm sorry, but diabetes can't be ruled out with a urine sample. Sounds like you are experiencing hypoglycemia - the low blood sugar levels. This can be diagnosed, as well as diabetes, from several blood tests. Please ask your doctor to test you properly. These are conditions that can cause serious problems if left untreated for too long. I wish you the best - EJ23

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