Does Drinking Black Coffee Raise Your Blood Sugar Levels?

Coffee is often referred to as a pick-me-up, but it can have an unexpected impact on blood sugar levels. So, does black coffee raise blood sugar? The short answer is: it depends.

In moderation, black coffee contains little or no calories and therefore has minimal effect on blood glucose levels. However, when added to drinks such as lattes and cappuccinos, the combination of coffee with dairy or plant-based milk and sweeteners can have a greater impact on blood sugar levels.

Caffeine itself is known to increase blood glucose levels in some people, though this effect can vary significantly depending on an individual’s sensitivity to its effects. Additionally, if you add cream or sugar to your coffee, this will also contribute to blood sugar levels.

It’s important to consider that black coffee is not a replacement for meals or snacks, and should not be used as such. Coffee alone cannot provide the essential nutrients your body needs throughout the day and can even lead to blood sugar fluctuations if consumed in excessive amounts.

Coffee And Diabetes

The idea of coffee and diabetes continues to draw mixed reactions. Most people seem unsure of what to believe due to misinformation about this topic. While it is true that coffee may not be the healthiest choice for diabetics, its moderate consumption can be beneficial.

can diabetics drink coffee and tea

Studies have shown that black coffee has a minor blood sugar-raising effect in those with diabetes – but, compared to other drinks and snacks, it still ranks as one of the lower-sugar choices out there. Moreover, coffee contains polyphenols, which are antioxidants that can help protect against blood sugar imbalances.

Fun fact

In research done on 40,000 participants, findings showed taking 3 cups of coffee daily led to a 40% reduced risk of developing type 2 diabetes. A follow-up study done by the UK National Health Service further showed that increased coffee consumption further reduced the development of type 2 diabetes by 11%.

Interestingly, coffee consumption has been found to increase physical levels.

Decaffeinated Coffee And Blood Sugar

decaffeinated coffee and blood sugar levels

Decaffeinated coffee can also have an impact on blood sugar levels, though not as much as regular black coffee.  While some people opt for decaf to reduce their blood sugar levels, studies show that the difference between caffeinated and decaffeinated coffee is negligible. Caffeine reduces sensitivity to insulin. Healthcare providers advise diabetics to use decaffeinated coffee since it contains the health benefits of coffee and mitigates some of the negative effects.

Does Black Coffee Raise Blood Sugar?

Overall, black coffee can raise blood sugar levels, but this effect is usually minimal. It can vary greatly depending on an individual’s sensitivity to caffeine and other ingredients added to the beverage. Ultimately, moderation is key when it comes to drinking coffee, and monitoring blood sugar levels regularly are recommended.


Does coffee on an empty stomach spike blood sugar levels?

Yes, black coffee can raise blood sugar levels in some cases. However, the effect is usually small and depends on an individual’s sensitivity to caffeine and other ingredients added to the drink.

Is decaf better for blood sugar?

Decaffeinated coffee contains fewer substances that can cause blood sugar spikes than regular black coffee.

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