The amount of glucose in the blood is affected by what you eat and drink. Generally you would see that the blood glucose level is lower in the morning after fasting for about 8 hours while it goes up after meals. Moreover depending upon what you eat, it may rise any time throughout the day. Previous studies on caffeine and diabetes had shown that those who drank caffeine were least likely to get type 2 diabetes. It was a finding by which everyone assumed caffeine had no effect on diabetes. However, recent studies have shown caffeine raising blood glucose levels.
Study shows caffeine raising blood glucose levels throughout the day
The findings of the Duke University announced by the American Diabetes Association have shown that caffeine causes blood glucose levels of type 2 diabetics to rise through the day and especially after meals. This would be quite a shock to type 2 diabetics who consumed caffeine feeling assured that it would not raise the blood glucose levels. The Duke University study, however, shows that if Type 2 diabetics had caffeine their blood glucose levels were affected throughout the day. So, even if they drank caffeine in the morning the effect on blood glucose levels stayed throughout the entire day thus making it difficult to keep glucose levels under control.
For this study the participants were given identical packs of pills to take with breakfast and lunch for two days. One day’s pill contained caffeine equivalent to four cups of coffee and other day’s pills were placebos. The participant did not know which pill they were taking and did not take any other caffeine content during the study. They had continuous glucose monitors placed to study glucose levels during the study. It was found that participants had average glucose levels about 8%higher the day they took caffeine pills as compared to days when they took placebos. The same results were seen when they were checked after the meals.
Another study conducted at university of Guelph also came up with some interesting conclusions. If you had caffeinated coffee with your low sugar low glycemic cereal, it can cause your blood glucose levels to spike as much as 250%. They also found that having caffeinated coffee with either a high or low GI meal causes impaired blood glucose management and insulin sensitivity as compared to a decaffeinated coffee. However, there is need for some more studies to find the correlation between insulin sensitivity and coffee.
Overall several studies have shown that moderate amount of caffeine do not affect blood sugar levels. But, then how does caffeine raise blood glucose levels. This is because of the effect it has on the two hormones, glucagons and adrenaline. When you consume excess amount of caffeine these hormone release sugar stored in the liver which results in the higher blood glucose levels.
If you are a type 2 diabetic and find it difficult to keep your blood glucose levels in the normal range, examine the amount of caffeine you are consuming. The source of caffeine could be anything, even your diet coke. Find the right combination of diet, exercise and medicine that would help reduce your high blood glucose levels. Though some more studies may be needed to pinpoint the exact reason of these findings, you can very well limit your caffeine intake to moderate levels. Study for yourself if the glucose levels remain lower than what you may have experienced other times. Consult your doctor and plan accordingly.
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