What Exactly Can You Drink While Intermittent Fasting Without Breaking Your Fast?


Intermittent fasting (IF), an eating style that’s typically paired with high-protein or keto diets, begs a lot of questions, especially if you’re new to it. You might be curious about what type of fasting schedule you should try, what the legit health benefits are, whether you’ll experience any side effects and what kind of weight-loss results you can expect. Another common question is whether you can have beverages, like coffee and water, during your fasting periods.

What is intermittent fasting?

Intermittent fasting works by allowing you to eat only in specific windows of time. It’s thought that by taking on this method, there are health perks. It might be anti-ageing and elevate energy levels. Added to that, there are thought to be weight loss gains to me made.

There are various intermittent fasting schedules, each tailored to different body types and needs.

Can you drink while intermittent fasting?

The short answer is: It depends on the beverage and the type of IF diet you’re following. Different types of intermittent fasting, from dry fasting to the Warrior Diet, have different guidelines. But a good rule of thumb is to avoid any drinks that have any calories while you’re fasting, says dietitian Erin Palinski-Wade, author of 2 Day Diabetes Diet.

Consuming any carbs, proteins, or fats when you’re trying to maintain a fasted state can negate the weight-loss benefits of intermittent fasting, she says. IF diets are also thought to lead to a reduction in insulin resistance and help control blood sugar, both of which can reduce your chances of becoming diabetic. These benefits can be quickly cancelled out if you consume too many liquid calories during a period of what should be a fasted state.

Here’s what you should know about some of the most popular drinks you might *want* to consume while doing intermittent fasting and whether or not they’ll take you out of a fasted state.


You can drink it black. Black coffee is calorie-free, so it’s fine to enjoy during the fasting phase. But adding in sugar, cream, or milk is best avoided. It can add calories to the drink that can take you out of a fasted state.

“If you do want to flavour your coffee during a fast, experiment with calorie-free flavouring from a spice like cinnamon,” says Palinski-Wade. “Save the coffee add-ons for your non-fast windows of time.”

Additionally, avoid having more than one cup, or switch to decaf, when you’re fasting. Excessive caffeine, especially on an empty stomach, may increase those jittery feelings which can often increase appetite and the desire to snack, she says.


Go for it. Just like coffee, tea is naturally calorie-free and fine to have during a fast, so long as it’s simply brewed tea that comes from tea bags, leaves, or flakes. Bottled ice tea is often heavily sweetened. So if you go that route, make sure you’re opting for one that is unsweetened and not loaded with added sugar and calories, says Palinski-Wade. Caloric add-ons such as honey, milk or cream should be reserved for non-fasting times, just like with coffee.

“Since tea is naturally lower in caffeine than coffee, you can have a bit more during fasts, however, I would still recommend opting for decaf when possible,” she says.

Water and soda water

Drink up. Water is naturally calorie-free so there’s no need to restrict it, says Palinski-Wade. Water in general is a good idea to sip on during fasting times. It ensures hydration but also is a way to fill your stomach and prevent hunger.

If you enjoy flavoured water, you can add in fruit wedges or a splash of lemon or lime juice (or a splash of another juice) as long as it is a true “splash” and doesn’t add more than a trivial amount of calories, says Palinski-Wade. Carbonated water can be treated in the same way as water, as long as it is naturally flavoured and calorie-free.

Soft drinks

Skip it. Palinski-Wade recommends staying away from soft drinks in general. That’s even if you’re not following a diet like intermittent fasting.

Regular soft drinks are usually loaded with sugar and calories and offer no nutritional value, she says. There also isn’t enough data and research to say whether diet soft drinks are okay to drink during IF, but research suggests that consuming too many artificial sweeteners (as diet soft drinks tend to have) can increase cravings and appetite, as well as promote weight gain and the storage of fat.

“Your best bet is to limit all soft drinks as much as possible and satisfy carbonation cravings with carbonated water,” she says.


Pass on it. Alcohol should never be consumed when in a fasting period, as its effects can be intensified when consumed on an empty stomach, says Palinski-Wade. Alcohol is also a source of calories, so drinking it would break your fast. It will also likely stimulate your appetite and lead to increased hunger and cravings.

What about taking supplements during a fasting period?

This depends on the fasting schedule you’re following. You should discuss any supplements with your doctor before beginning to take them, says Palinski-Wade. You could take your supplements during the eating hours (unless otherwise instructed by your doctor or dietitian). Most supplements like a multivitamin are better absorbed when taken with food.

If you intermittently fast that involves fasting on specific days, like the 5:2 diet, you should still take a supplement. You still need to ensure you are meeting your nutrient needs each day. Palinski-Wade recommends taking a high-quality multivitamin daily when following any IF plan.

“Generally, the small amount of calories found in a chewable/gummy/liquid vitamin would not offset a fast day,” she says. “But do discuss this with your doctor or dietitian first to make sure you can take your supplement on an empty stomach.”

The bottom line: At the end of the day, you want to consume close to zero calories during fasting periods. By avoiding sweetened drinks and bottled iced tea, as well as caloric add-ons in your hot beverages, you can ensure you follow your IF plan correctly and successfully.

This article was originally published on www.womenshealthmag.com

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