Many people with or without diabetes start the day with a cup of coffee. So, is coffee ok for diabetes? And what about people who do not have diabetes? Is it ok with them who do not have diabetes or there is a chance of getting diabetes? There have been so many studies on the topic and amazingly there are very interesting findings of those studies.

The positive side of the question- is coffee ok for diabetes are as follows-

is-coffee-ok-for diabetes


  • Coffee contains polyphenols, which are a molecule that anti-oxidant properties which are widely believed to help prevent inflammatory illnesses, such as type 2 diabetes and anticarcinogenic (anti-cancer) properties.
  • As well as polyphenols, coffee contains the mineral magnesium and chromium. Greater magnesium intake has been linked with lower rates of type 2 diabetes.
  • The blend of these nutrients can be helpful for improving insulin sensitivity, which may help to offset the opposite effects of caffeine.
  • people with Type 1 diabetes can reduce their risk of hypoglycemia during the night by having a small to moderate amount of caffeine before bed

There have been so many case study on the topic is coffee ok for diabetes and a few of them are stated below-

Case 1: The American Diabetes Association identifies coffee’s impact on blood sugars can vary. According to a review published in the February 2014 issue of “Diabetes Care,” the risk of developing type 2 diabetes decreases with coffee consumption. However coffee and the additives in coffee drinks can influence blood sugar control in those who already have diabetes.

Case 2: Another study was conducted by Harvard’s Dr. Frank Hu. His team found that the risk of type 2 diabetes decreased by 9% for each daily cup of coffee consumed.

Case 3: A study led by the Harvard School of Public Health has shown that in total, 1,109,272 subjects were studied, of whom 45,335 had diabetes. The study followed participants from 10 months to 20 years. The study found that both caffeinated and decaffeinated coffee lowered the risk of developing type 2 diabetes.

Case 4: An 11-year study looked at diabetes and coffee risk association in postmenopausal women. They found that women who consumed 6 cups of coffee had a 22% lower risk of developing type 2 diabetes.

Case 5: An 18-year Swedish study also showed a greater degree of decreased risk among women who consume the most cups of coffee daily.

Case 6: Nineteen of 22 epidemiological studies concluded that long-term consumption of coffee, both caffeinated and decaffeinated, can reduce the risk of type 2 diabetes.

A compound in coffee helps stop diabetes but to get the benefit you should have an espresso coffee –Dr. Fredrik Brustad Mellbye, a Danish Scientist


The blend of ingredients can also help to improve insulin sensitivity which can help to offset the adverse effects of caffeine. The carbohydrates from added sugar, syrup, milk or flavored creamer can increase blood sugar in someone with diabetes.

There have been also so many case study on the effect of is coffee ok for diabetes and a few of them are stated below-

Case 1: There are a lot of ingredients in coffee other than caffeine. Some of them may be responsible for that protective effect seen in the 2014 study. Also, drinking caffeinated coffee over a long period of time may change its effect on glucose and insulin sensitivity.

Case 2: Another 2004 study looked at a “mid-range” effect on people without diabetes who had been either drinking 1 liter of coffee a day or who abstained for a period of four weeks. At the end of the study, those who consumed more coffee had higher amounts of insulin in their blood. This was the case even when fasting.

If you have type 2 diabetes, the body tries to make more insulin in order to remove sugar from the bloodstream. The “tolerance” effect seen in long-term coffee consumption takes a lot longer than four weeks to develop.

Case 3: There is a clear difference in how people with diabetes and people without diabetes respond to coffee and caffeine. A Duke University study had habitual coffee drinkers with type 2 diabetes continuously monitor their blood sugar while doing daily activities. During the day, it was shown that right after they drank coffee, their blood sugar would soar. Blood sugar was higher on days that they drank coffee than it was on days they didn’t. Coffee might be protective of those who haven’t developed diabetes, but caffeine can be dangerous if you already have type 2.



The best way to approach coffee intake is to keep track of your blood sugar levels and see what happens after drinking coffee.  If you see no significant changes, coffee may work well for you, but if you see significant increases in your blood sugar, you might first try decaffeinated coffee, though other than for post-menopausal women, there doesn’t seem to be any difference, or try it black, with low-fat milk, with coconut or soy milk.

Water is the best drink for people with diabetes. If they choose to drink coffee, they should be sure to keep an eye on their blood sugar levels.

The moderate choice (or compromise) is often 2-4 cups of coffee a day.

Coffee tips on-the-go: The best options for coffee on-the-go include ordering black coffee and adding small amounts of cream or sweetener at the bar; asking for lower carbohydrate options such as sugar-free syrups, unsweetened soy or almond milk; choosing a half-sugar coffee, and always leaving off the whipped cream.


How can coffee both protect against diabetes and worsen diabetes?


Well, if you plan on sweetening your caffeinated beverage with sugar, cream or milk, always check the carb count because it helps to improve insulin sensitivity. Even some artificial sweeteners have been known to cause a rise in blood sugar levels due to its ingredients.

On the other hand, coffee contains polyphenols, which are widely believed to help prevent type 2 diabetes and also coffee contains the mineral magnesium and chromium which have been linked with lower rates of type 2 diabetes.

However, different studies suggest that coffee doesn’t always affect people in the same way. Knowing exactly how much effect it could have on you will take some experimentation, and could be dependent on many things –including time of day, carb counts, physical activity, hormone levels and the amount of caffeine ingested.

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