Caffeine - Good Or Bad On Keto & Low-Carb Diet? (2024)

There’s nothing quite like a steaming mug of rich coffee first thing in the morning. It’s comforting, delicious and simply makes you feel great. You might say it’s essential to kickstart your day, and you wouldn’t be far wrong.

Coffee contains that magical substance called caffeine that’s notably known for its ability to energise even the most lethargic of us.

A Keto diet can feel strict at times; we give up many favourite comfort foods like bread, cakes and pasta - all in pursuit of health and vitality of course. But saying goodbye to caffeine-rich treats like coffee could be a deal-breaker for many. So is caffeine good or bad when you’re committed to a low-carb Keto diet?

What Is Caffeine?

First things first, where does caffeine come from? Caffeine is a natural stimulant found in the fruit, leaves and beans of coffee, cacao and guarana plants. It’s the most common stimulant taken across the world, with around 80% of the world’s adult population regularly consuming caffeine.

The popularity of caffeine has a lot to do with its effect on our bodies. There's a scientific reason for the feel-good factor: Caffeine blocks a neurotransmitter called adenosine (responsible for promoting relaxation), which in turn enhances dopamine signaling in the brain. As a result you feel more alert, energised and happy.

In its purest form caffeine is a bitter-tasting white powder that contains many antioxidants and nutrients, it’s also nearly calorie and carb free - making it a Keto-friendly food, yay!

But...yes there’s a big BUT, how you take caffeine is what's crucial on Keto. Caffeine as a substance is totally Ketogenic, but if you indulge in sugar-laden caffeine drinks and foods, you’ll kick yourself out of ketosis before you can say, “Grande - almond - cinnamon - no foam - extra shot - extra hot - three pump vanilla - caramel macchiato please”.

Benefits Of Caffeine While On Keto

As well as helping you feel more focused and optimistic, caffeine has many other benefits for ketone-fuelled peeps like you:

Fat-Burning

Caffeine can suppress your appetite and increase the breakdown of fat. Research found caffeine significantly increases resting metabolic rate (RMR), and promotes weight and fat loss. The potential for caffeine to increase the breakdown of fat in the body also suggests it has an ability to elevate ketones.

Ketone-Boosting

A small yet important study found a significant relationship between caffeine consumption and ketone levels. 10 healthy adults were given a breakfast with either 2.5mg of caffeine per kg of body weight, or 5mg of caffeine per kg of body weight. Ketone levels increased by 88% and 116% respectively, compared to the control group - breakfast without caffeine. This shows you could definitely help your body stay in ketosis with a Keto-friendly cuppa.

Blood Sugar-Balancing

Caffeine also seems to protect against fluctuating blood sugar levels and reduce the risk of diabetes. A meta analysis concluded that for every 2 cups of caffeinated coffee drunk a day, the risk of developing diabetes is reduced by 12%.

Other research suggests the long-term use of caffeine is more efficient at balancing blood sugar.

Caffeine - Good Or Bad On Keto & Low-Carb Diet? (1)

Make Your Caffeine Count

While caffeine can be great for your health, and particularly beneficial for ‘Keto-ers’, the amount you indulge in, and the way you enjoy it, matters.

Too much caffeine can cause health problems such as anxiety, insomnia, digestive issues, high blood pressure and rapid heart rate. So how much caffeine is too much? It really depends on you. A large analysis of 41 studies found that anywhere between 38-400mg a day can be value-for-health. But this is a huge range of between ⅓ cup to 4 cups of coffee a day!

The ideal amount has to be what feels good to you - if you find yourself experiencing the jitters after your morning coffee break, or you’re waking up in the middle of the night after a post-dinner espresso, you may be maxed-out on the caffeine uptake.

Likewise, if you’re getting your caffeine-fix with a generous helping of refined sugar and carbs, you’re going to unravel your ketosis. Instead, prosper from the great benefits of caffeine by making it work in your favour - add the good fats, eliminate the carbs and sugar, and feel amazing for it.

Caffeine - Good Or Bad On Keto & Low-Carb Diet? (2)

KetoKeto Bars

Our bars are made with carefully selected ingredients, such as almonds and coconut oils to ensure you get the right balance of healthy fats and protein for your digestion. Low in net carbs and developed to have minimal impact on blood sugar levels, over 10,000 people in the UK trust them as their go to keto snack.

Shop Now

Keto-Friendly Caffeine

Bulletproof Coffee

It’s healthier, tastier and will keep you feeling satisfied. Energy will surge, metabolism will increase and your immunity will power-up; Bulletproof Coffee lives up to its name. Here are the other benefits Bulletproof can boast about:

  • Aids digestion
  • Eradicates lethargy
  • Anti-inflammatory
  • Promotes ‘happy hormones’
  • Helps weight loss

The Ketogenic low-carb diet is probably most famous for this powerhouse drink. It’s essentially the finest grade coffee you can afford, taken black with an added 2 tbsp each of grass-fed butter and premium quality MCT oil. It’s delicious, comforting and oh-so filling.

Black Tea

With hardly any carbs (less than 1g per cup), black tea is a great caffeine option. Be sure to stay clear of sweetened milks or added sugar though. Instead, add flavour and sweetness to your brew with a sprinkle of spice like cinnamon, cardamom or nutmeg. Not only do they give your tea a little oomph, they also add warmth and valuable nutrients.

Green Tea

High in antioxidants, green tea is renowned for its healing and anti-cancer properties. It’s a great alternative when you fancy something different from the dense richness of coffee. As with all teas and coffees, it can be enjoyed hot or cold - try adding a lemon slice and mint leaves over crushed ice, for a refreshing caffeine boost free from carbs.

Caffeine - Good Or Bad On Keto & Low-Carb Diet? (3)

KetoKeto Low Carb
Crunch Puffs

Missing crisps? We know the feeling. We created our keto, low carb crisps to help you snack better and fix that crunch-craving. Not to mention they're also high in protein, low in calories, high in fibre, vegan and gluten free.

Shop Now

Is Caffeine Good Or Bad?

It really depends on how you take it. On its own - great! Caffeine is low in sugar and carbs and completely Keto-kind. But any caffeine product combined with high carbs and/or sugar is bad news for Keto-fans.

You can continue to enjoy all the benefits of caffeine - and there are many for promoting ketosis - but you may need to change the way you drink it. Remove sweet milks, sweeteners, sugars and any other tempting syrup on offer. As always on Keto, take the opportunity to explore new healthy and delicious flavours; with the added benefit of feeling fantastic, you’ll probably find you prefer it.

Caffeine - Good Or Bad On Keto & Low-Carb Diet? (2024)

FAQs

Caffeine - Good Or Bad On Keto & Low-Carb Diet? ›

Both coffee and tea are low in carbs and can be enjoyed on a keto diet as long as they are unsweetened,” says Winnifred, noting that adding a bit of dairy milk or cream is fine as long as you stay within your daily carb limit. For those following a keto diet, feel free to drink unsweetened plant-based milks, too.

Does caffeine affect a keto diet? ›

Caffeine is low in sugar and carbs and completely Keto-kind. But any caffeine product combined with high carbs and/or sugar is bad news for Keto-fans. You can continue to enjoy all the benefits of caffeine - and there are many for promoting ketosis - but you may need to change the way you drink it.

What caffeine is keto-friendly? ›

Of course, adopting a diet that avoids sugar and carbs might mean your favorite flavored latte is out of the picture. But java addicts will be pleased to learn that coffee is 100% keto-friendly. Traditional hot or cold brew coffee has zero calories and carbs.

What kind of coffee can I drink on keto? ›

There's nothing in black coffee that you can't have if you're following keto. The caffeine content is fine – and brings many additional health benefits of its own when taken in moderation – but of course, you can stick to decaf if you prefer, it's up to you.

What is the best energy drink for a keto diet? ›

Keto-Friendly Energy Drinks
Keto-Friendly Energy DrinksServing SizeNet Carbs
Red Bull Sugarfree*12 fluid ounces4 grams
Red Bull Total Zero12 fluid ounces0 grams
Zevia Zero Calorie Energy Drink12 fluid ounces0 grams
Monster Energy Zero Ultra*16 fluid ounces2 grams
4 more rows
Feb 12, 2024

Is caffeine bad for a low carb diet? ›

Both coffee and tea are low in carbs and can be enjoyed on a keto diet as long as they are unsweetened,” says Winnifred, noting that adding a bit of dairy milk or cream is fine as long as you stay within your daily carb limit. For those following a keto diet, feel free to drink unsweetened plant-based milks, too.

Can too much caffeine kick you out of ketosis? ›

Caffeine Consumption and Its Impact on Ketosis

For those following a ketogenic diet, understanding the impact of caffeine consumption is crucial. Studies suggest that excessive intake can interfere with your keto progress by activating adrenaline, which in turn triggers insulin production.

Is peanut butter keto? ›

Peanut butter can definitely be part of a keto diet, but it's best to stick to plain options that are free of extra flavors and sweeteners. Almond butter is a good choice, too, and it's slightly lower in carbs. Additionally, you should be mindful of your portion size if you're trying to lose weight.

What fruit can I eat on keto? ›

Keto fruits by definition are low in carbohydrates. You still need to exercise portion control with most keto-friendly fruits to be within the limits of a keto diet. Keto-friendly fruits include avocados, watermelon, strawberries, lemons, tomatoes, raspberries, peaches, cantaloupe, star fruit, and blackberries.

What is the daily carb limit on keto? ›

The ketogenic diet typically reduces total carbohydrate intake to less than 50 grams a day—less than the amount found in a medium plain bagel—and can be as low as 20 grams a day. Generally, popular ketogenic resources suggest an average of 70-80% fat from total daily calories, 5-10% carbohydrate, and 10-20% protein.

What diet sodas are keto friendly? ›

According to keto practitioners, you can drink diet soda on keto. Diet soda is sugar-free, which means it basically has no carbs. As an alternative, it uses carb-free sweeteners, such as Stevia, Xylitol, sucralose, and erythritol.

Which soda has the least carbs? ›

Diet soda and sparkling water are usually free of net carbs. Try to choose soft drinks that are sweetened with stevia or other natural zero calorie sweeteners as opposed to artificial sweeteners.

What are the best protein shakes for keto? ›

Healthline's picks of the best low carb protein powders
  • Klean Athlete Klean Isolate.
  • True Athlete Natural Whey Protein.
  • NOW Sports Micellar Casein.
  • NOW Sports Egg White Protein.
  • Promix Vegan Protein Powder.
  • Momentous Essential Plant-Based Protein.
  • Best soy protein.
  • NOW Sports Soy Protein Isolate.
Sep 29, 2022

Does coffee spike insulin keto? ›

Black or plain coffee is great for those on the Keto diet. This is because you get all the benefits of coffee, as described above, without any added sugar or cream. It is the healthiest way to drink coffee because it contains the least number of calories and won't boost your blood sugar level.

Can you drink coffee while fasting on keto? ›

Low Acid / Infrared Roasted Coffee is one of your best tools in succeeding at Intermittent Fasting and Keto.

Why is coffee important on keto? ›

Keto coffee helps weight loss if used instead of breakfast in the morning. The healthy fat used in the coffee provides extra energy and satiation (so you do not feel hungry) without spiking insulin. So, the body stays in the 'fat burning' state for longer and people lose weight quicker.

Does flavored coffee kick you out of ketosis? ›

Many companies use a variety of additives to flavor up their coffee. This can have a negative impact on your ketosis. Many natural and artificial sweeteners will kick you out of ketosis. Putting your lifestyle at risk with any old nitro coffee won't do.

Top Articles
Latest Posts
Article information

Author: Sen. Emmett Berge

Last Updated:

Views: 6306

Rating: 5 / 5 (80 voted)

Reviews: 95% of readers found this page helpful

Author information

Name: Sen. Emmett Berge

Birthday: 1993-06-17

Address: 787 Elvis Divide, Port Brice, OH 24507-6802

Phone: +9779049645255

Job: Senior Healthcare Specialist

Hobby: Cycling, Model building, Kitesurfing, Origami, Lapidary, Dance, Basketball

Introduction: My name is Sen. Emmett Berge, I am a funny, vast, charming, courageous, enthusiastic, jolly, famous person who loves writing and wants to share my knowledge and understanding with you.