If you're a diabetic, you may be wondering if you can drink coffee. Coffee has gotten a bad rap over the years, but is it actually bad for diabetics? In this article, I'll discuss if there a best coffee for diabetics, whether or not caffeine is bad for diabetics to how much coffee per day is safe for people with diabetes. 

How Does Coffee Affect Diabetes?

There is some evidence that suggests coffee consumption can interfere with blood glucose levels, but the research on this topic is inconclusive. Some studies suggest that coffee may create blood sugar spikes in people with diabetes, while others show no effect. However, it's important to keep in mind that most of these studies are observational and don't prove a cause-and-effect relationship. 

What Are the Benefits of Drinking Coffee?

Drinking coffee is related to lots of benefits. Coffee contains many antioxidants and polyphenols which have anti-inflammatory and anticarcinogenic properties. Coffee has been linked with a decreased risk of Parkinson's disease, type 2 diabetes, heart disease, stroke, and Alzheimer's disease.

What Is The Best Coffee for Diabetics?

The best coffee for diabetics is a matter of personal preference. Some people find that drinking black coffee helps to control blood sugar levels, while others prefer to drink espresso or lattes with low-fat milk. As long as you're not adding sugar or cream, any type of coffee should be fine.

The best way to make sure you're getting the healthiest cup of joe is by brewing it yourself using a French press or an Aeropress. If you don't have time to brew your own coffee, look for brands that are organic and fair trade. Coffee beans that are organically grown tend to be lower in acidity than conventionally grown beans. And, because fair trade coffees are ethically sourced, they often have a richer flavor than conventional coffees.

Green coffee beans are also a perfect choice for diabetics. Green coffee beans are unroasted, so they retain more of their natural nutrients. Roasting can destroy some of the antioxidants and health benefits of coffee. The health benefits of green coffee may be attributed to its chlorogenic acid, which is a powerful antioxidant that has been shown to keep blood sugar levels stable in our bodies.

Single Origin Unroasted Green Coffee Beans

Looking for a delicious, fresh-roasted cup of coffee? Look no further than the Single Origin Unroasted Green Coffee Beans. 100% Arabica beans, these beauties are perfect for home roasting and brewing.

The brand recommends a medium roast to bring out the delicate nuances of the bean and create a well-balanced, smooth cup of coffee. With notes of sweetness, citrus acidity, and cacao, the unroasted green beans provide an unparalleled healthy coffee experience with a beneficial effect.

We earn a commission if you make a purchase, at no additional cost to you.
03/16/2024 08:29 am GMT
COFICAFE Unroasted Green Coffee from Colombia

COFICAFE's Unroasted Green Coffee from Colombia is a unique coffee that is grown in the mountains of Tibacuy, Cundinamarca. This coffee is known for its maple syrup, jasmine, and vanilla flavor with caramel notes.

We earn a commission if you make a purchase, at no additional cost to you.

How to Choose the Right Coffee for Diabetes

Choosing the proper coffee for diabetes involves considering several factors, including caffeine, sugar, and fat. Here are some tips to help you make the best choices:

Illustration Of How To Choose The Right Coffee For Diabetes

Caffeine Content

Some individuals may experience insulin resistance or temporary spikes in blood sugar after consuming caffeine. Monitoring your body's response is a good idea to determine how caffeine affects you. If coffee consistently causes your blood sugar to rise, consider switching to decaffeinated coffee or reducing caffeine intake. Experiment with different caffeine levels and observe how your body reacts. Some people with diabetes can tolerate moderate caffeine consumption without significant fluctuations in blood sugar levels.

Sugar Content

When selecting coffee for diabetes management, avoiding coffee drinks that are sweetened with sugar or syrups is crucial. These sweeteners can lead to rapid spikes in blood sugar levels, which can be particularly problematic for individuals with diabetes. Instead, choose sugar-free alternatives, such as artificial sweeteners or natural options like stevia, if you prefer a sweet taste in your coffee. Always check the nutritional information or inquire about sugar-free options when ordering coffee from cafes or shops to ensure you're making a diabetes-friendly choice.

Fat Content

Coffee drinks with ingredients like cream or whole milk tend to be high in saturated fat and calories, potentially contributing to weight gain and insulin resistance. To manage the fat content of your coffee, consider substituting low-fat or non-fat milk, almond milk, or other non-dairy milk alternatives. These options can provide a creamy texture without the excess saturated fat. Be cautious when adding whipped cream or flavored creamers to your coffee, as they can also introduce extra calories and saturated fat into your diet. Opt for lower-fat or sugar-free alternatives to minimize the impact on your blood sugar levels.

Does Coffee Increase Blood Sugar Levels?

Coffee doesn't cause high blood sugar levels, but it can affect how quickly they return to normal after a meal.

Caffeine may alter how your body responds to insulin, the caffeine may reduce your insulin sensitivity. This implies that the hormone's cells don't react as strongly to it as they did previously.

After you eat or drink, they don't hold as much sugar in your blood. As a result, your body produces more insulin and you have higher blood sugar levels after meals.

What to Add to Coffee for Diabetes

To enhance the flavor of your coffee without significantly affecting blood sugar levels, consider adding the following ingredients:


Cinnamon improves insulin sensitivity and may help lower blood sugar levels. Sprinkle a pinch of cinnamon into your coffee for a delightful, diabetes-friendly flavor boost.

Vanilla Extract

Vanilla extract is a calorie-free and carbohydrate-free option that can add a delicious aroma and taste to your coffee without impacting your blood sugar levels.


Stevia is a natural sweetener with zero calories and a glycemic index of zero, making it an excellent choice for sweetening your coffee without raising blood sugar. You can use stevia drops or packets to achieve your desired level of sweetness.

These additions can enhance your coffee experience while maintaining better control over your blood sugar levels, making them suitable choices for individuals with diabetes.

Is Caffeine Bad for Diabetics?

So, is caffeine bad for diabetics? In general, moderate amounts of caffeine are safe for people with diabetes. However, if you're sensitive to caffeine or if you've been diagnosed with prediabetes, it may be best to limit your intake. 

How Much Caffeine Is Too Much?

According to the American Diabetes Association (ADA), up to 400 milligrams of caffeine per day is safe for most people with diabetes. That's about four cups of brewed coffee. The total caffeine amount in your coffee depends on the size of your cup and the brewing method.

Too much coffee consumption and caffeine can have an effect on your blood glucose levels, so it's best to stick to the recommended amount.

Your blood sugar levels rise after meals. Caffeine may make it more difficult to return them to a normal level. This might result in higher and uncontrolled blood sugar levels.

If you're not sure about the caffeine content in your coffee, check the label or ask your barista. 

Which Is Better for Diabetics Tea or Coffee?

If you're looking for a lower-caffeine option, try an organic decaffeinated coffee or an herbal tea or green tea. Teas made from herbs like ginger, chamomile, lavender, and rosehip are all good options for diabetics. They're low in calories and sugar, and they contain antioxidants that can help improve blood sugar control.

Frequently Asked Questions

Can you drink coffee with Metformin?

Yes, it's generally safe to drink coffee while taking Metformin, a commonly prescribed medication for diabetes. However, caffeine can sometimes lead to gastrointestinal side effects like nausea or upset stomach, which can be exacerbated with Metformin. If you experience such issues, consider reducing your caffeine intake or decaffeinated coffee.

Does milk in coffee spike insulin?

Milk in moderate amounts typically has a lower impact on insulin levels than sugary or high-fat coffee additives. However, it's essential to be mindful of portion sizes. Low-fat or non-dairy milk options can minimize the impact on insulin, making them preferable choices for individuals looking to control their blood sugar levels.

What kind of coffee can a prediabetic drink?

Prediabetics can enjoy coffee but should be cautious about added sugars, high-fat creams, or excessive sweeteners. Opt for plain black coffee or customize it with diabetes-friendly ingredients like cinnamon, vanilla extract, or stevia for flavor. Pay attention to portion sizes, and consider monitoring how coffee affects your blood sugar levels to find the best choices for your specific needs.


In general, coffee is considered safe for people with diabetes. However, it's important to moderate your intake and watch out for added sugars and creamers. The best way to enjoy a cup of coffee while still managing your diabetes is by brewing it yourself with organic, fair-trade beans or choosing an unsweetened version. And if you're sensitive to caffeine, be sure to stick to the recommended amount per day.


At Diabetic Me, we are committed to delivering information that is precise, accurate, and pertinent. Our articles are supported by verified data from research papers, prestigious organizations, academic institutions, and medical associations to guarantee the integrity and relevance of the information we provide. You can learn more about our process and team on the about us page.

  1. WebMD More on coffee, diabetes, and insulin sensitivity
  2. Medical News Today How does coffee affect diabetes?

About the Author

Ely Fornoville

Hi, I'm Ely Fornoville, and I am the founder of Diabetic Me. Being a type 1 diabetic since 1996, I developed a passion to help people learn more about diabetes. I write about diabetes and share stories from other diabetics around the world. I currently use a Medtronic Guardian 4 CGM and a MiniMed 780G insulin pump with Humalog insulin.

View All Articles