Published May 20, 2019
Researchers in the United States (US) said inadequate and long sleep were both associated with adverse measures of glycemia among adults with prediabetes.
The findings of their study was published online in ‘Diabetes Care’. Glycemia means the presence, or the level, of glucose in one’s blood. Adverse glycemia could be: hyperglycemia, which is an unusually high concentration of glucose in the blood or hypoglycemia, an unusually low concentration of glucose in the blood. Frequent or ongoing high blood sugar can cause damage to the nerves, blood vessels, and organs. It can also lead to other serious conditions. People with type 1 diabetes are prone to a build-up of acids in the blood called ketoacidosis.
Low blood sugar levels can also cause a variety of problems within the central nervous system. Early symptoms include weakness, lightheadedness, and dizziness. Headaches can occur from a lack of glucose, especially if you have diabetes. You may also feel signs of stress, such as nervousness, anxiety, and irritability. Babak Mokhlesi, M.D., from the University of Chi cago in the United States (US) and colleagues assessed the effect of sleep disturbances and circadian misalignment on adults with prediabetes, and found that among those reporting less than five hours or more than eight hours of sleep per night, hemoglobin A1c was significantly higher.
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A1c test levels as a screening tool, gives a health-care professional a good idea that someone may have diabetes if the value is elevated; however, it is used as a standard tool to determine blood sugar control in patients known to have diabetes. In most laboratories, the normal range for hemoglobin A1c is four per cent to 5.9 per cent. In well-controlled diabetic patients, hemoglobin A1c levels are less than 7.0 per cent, but in poorly controlled diabetes, its level is 8.0 per cent or above. In the current study, what is noteworthy is that sleep duration is linked with the outcome of blood sugar level.
The researchers found that mean sleep duration was 6.6 hours. More than half of participants reported poor sleep quality (54 per cent) and high risk for obstructive sleep apnea (64 per cent).
Among those participants that reported less than five hours or more than eight hours of sleep per night, hemoglobin A1c was significantly higher. Similarly, there was an association between sleep duration of more than eight hours and higher fasting glucose and between sleep duration of less than six hours and higher body mass index (BMI).
The analysis included 962 overweight/obese adults (55 per cent male; mean age, 52.2 years) with prediabetes or recently diagnosed, untreated type 2 diabetes who completed a two-hour oral glucose tolerance test and validated sleep questionnaires, the ‘Medical Express’ reported. “Further research using objective measures of sleep is needed to better delineate the relationship between sleep and glycemia in adults with prediabetes or type 2 diabetes,” the reported stated.
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