What Happens to Your Blood Sugar Level After Taking Coffee

crazy by Editorial Staff | Updated on July 5th, 2023

If you’re among the millions who consider a steaming cup of coffee an essential kick-start to the day, you’ve probably wondered about its health implications, particularly if you’re managing a chronic illness like diabetes. While coffee is celebrated for its rich, energizing flavor, the impact it has on blood sugar levels is not as straightforward. Let’s unravel this stimulating mystery together.

The Brew: Nutritional Components of Coffee

Coffee is far more than a comforting, bitter brew. It’s rich in antioxidants such as ferulic, chlorogenic, and N-coumaric acids, and offers trace amounts of vitamins and minerals. Among these beneficial substances, caffeine stands out for its potent influence on our bodies.

Close-up Of Person Hands Holding Glucometer At Desk

Body & Beans: How Coffee Influences Your Systems

The impact of coffee is expansive, affecting your metabolism, multiple organ systems, and even athletic performance. Let’s delve into these interactions.


Beyond its caffeine content, coffee has an array of chemicals that can exert longer-term effects on your metabolism.

Organs and Systems

While caffeine is primarily metabolized in the liver, it can influence other organs and systems, such as the brain, heart, lungs, kidneys, and respiratory system.

Disease Interactions

Historically, studies have indicated that excessive coffee consumption may elevate blood sugar levels in individuals with diabetes. However, recent research published in the Journal of Clinical and Diagnostic Research in 2015 suggests that caffeine intake might improve blood sugar control and help prevent diabetes-related complications.

Accordingly, both caffeinated and decaffeinated coffee may reduce your risk of developing type 2 diabetes. As with many dietary considerations, personal factors and individual responses come into play.

The Wake-Up Call: How Caffeine Keeps You Alert

Caffeine’s alertness-boosting effects stem from two main processes.

It Inhibits Adenosine

The sleep-promoting neurotransmitter adenosine slows down the activity of neurostimulators like dopamine. By binding to adenosine receptors, caffeine prevents adenosine from calming your brain activity, helping you stay alert.

It Boosts Epinephrine

Caffeine gives you an energy kick by increasing your epinephrine (adrenaline) levels. However, it’s worth noting that it has little to no effect on epinephrine’s ability to affect glucose levels.

Stirring the Pot: Does Coffee Lower Blood Sugar?

Blood cells and glucose in the vein. 3D illustration

As we explore coffee’s health implications, it’s important to remember our unique genetic profiles. They determine how we respond to caffeine’s stimulating effects and potential side effects.

Caffeine’s Impact on Blood Sugar

The typical U.S. adult consumes approximately 280 milligrams of caffeine daily. This amount, equivalent to around two 8-ounce cups of coffee, appears safe for most healthy adults and doesn’t seem to affect blood sugar levels.

Too Much Caffeine Can Disrupt Blood Sugar Balance

Though 400 mg of caffeine daily is deemed safe for most, individuals with diabetes may experience low or high blood sugar due to caffeine’s influence on insulin activity. If your blood sugar levels fluctuate frequently after consuming caffeinated beverages, you may need to reconsider your intake.

Brewing Benefits: Can Coffee Prevent Diabetes?

Coffee’s antioxidants can contribute to health benefits, including a reduced risk of developing type 2 diabetes.

Better Brews: Alternatives to Caffeinated Coffee

If caffeinated coffee isn’t a suitable choice for you, consider these alternatives:

Decaffeinated Coffee

If you have diabetes but still yearn for your morning brew, decaffeinated coffee might be the solution. Just avoid adding sweeteners like creamer, syrup, or honey. Use sweeteners like keto sweetener version.

Green Tea

Green tea, rich in antioxidant catechins and anti-diabetic polyphenols, could be another great alternative. A study found that daily consumption of four cups of green tea for two months significantly reduced waist circumference and systolic blood pressure in individuals with type 2 diabetes.

The Bottom Line

If you’re managing diabetes, it’s essential to discuss coffee consumption and its potential impacts on your health with your doctor or healthcare provider. Taking a comprehensive approach that includes diet, physical activity, and regular medical check-ups is key to successfully managing diabetes.

Disclaimer: This post contains affiliate links, which means I may receive a small commission, at no extra cost to you, if you make a purchase using these links. Remember to support us by purchasing through the Amazon/Walmart/Impact Radius links provided. Last update on 2024-06-16 / Affiliate links / Images from Amazon Product Advertising API

Disclosure: No compensation or free products were received in exchange for writing this review.


Editorial Staff

The editorial staff at Crazy Coffee Crave is a team of coffee enthusiasts & Baristas who enjoy the one thing we all think about as soon as we get up in the morning. Trusted by thousands of readers worldwide.