Can dehydration cause high blood sugar? Yes, and it turns out, the two are more related than you may realize: Falling short on fluids can lead to hyperglycemia, as the sugar in your circulation becomes more concentrated, McDermott explains.
What does dehydration do to blood sugar levels?
Quite simply, when you don’t drink enough water, the glucose in your bloodstream becomes more concentrated. And that leads to higher blood sugar levels. Both mild and severe dehydration can have a notable impact on your diabetes.
Does drinking water affect glucose test?
Do not eat, drink, smoke, or exercise for at least 8-12 hours before your first blood sample is taken. You may drink plain water but no other beverages. This test may take up to four hours to complete. Activity can interfere with the results so you will need to remain in the lab for the duration of the test.
Does high glucose indicate dehydration?
People with diabetes have an increased risk of dehydration as high blood glucose levels lead to decreased hydration in the body. Diabetes insipidus, a form of diabetes that is not linked with high blood sugar levels, also carries a higher risk of dehydration.
Can dehydration affect glucose tolerance test?
Hydration status did not alter the serum glucose ( P = 0.627) or insulin ( P = 0.200) responses during the OGTT.
Will drinking water affect fasting blood test?
Water: It is important to keep drinking plenty of water when fasting, to stay hydrated. Water does not affect the results of a blood test and is acceptable to drink when a person needs to fast.
Can I drink water before my 3 hour glucose test?
DO NOT eat or drink anything except WATER for at least 8 hours before the test. You may drink plain water ONLY. Do NOT drink coffee, tea, soda (regular or diet) or any other beverages. Do NOT smoke, chew gum (regular or sugar-free) or exercise.
Can you drink water while fasting for GTT?
You will need to fast the evening before the test. From this time, do not eat or drink (water is permitted but do not drink tea, coffee, or cordial) until the test is finished the following day. Do not smoke during the fasting period.