Lots of people begin intermittent fasting with one query in thoughts: What ought to I eat? However the flipside issues simply as a lot – what ought to I keep away from?
To be fully trustworthy, even small slip-ups can throw off your outcomes, particularly if you happen to’re placing within the effort to stay to your consuming and fasting home windows. And it’s not nearly energy & counting – some meals can mess along with your blood sugar, set off cravings, or maintain you hungrier than earlier than.
However, the excellent news? Effectively, as soon as you already know the large offenders, it’s simpler to dodge them and deal with the meals that make fasting really feel doable.
Let’s stroll by what meals to keep away from throughout intermittent fasting, why it issues, and what you may seize as a substitute.
Why Sure Meals Can Disrupt Your Quick?
If you’re fasting, the entire level is to present your physique a break from digesting meals so it could deal with different issues, reminiscent of burning saved power, regulating blood sugar, and possibly even lowering a little bit irritation. The issue is, some meals (and drinks, after all) pull you proper out of that zone earlier than you even notice it.

Sugary snacks are positively one of many quickest methods to spike your insulin, which shuts down fat-burning and might depart you hungrier than you have been earlier than that meal.
The identical factor is with refined carbs. Your physique digests them rapidly, blood sugar shoots up, then crashes. Immediately, you’re not simply interested by your subsequent meal – you’re preventing off cravings that really feel pressing.
Additionally, greasy, heavy meals will be simply as disruptive. To be honest, they gained’t essentially increase blood sugar the identical manner as sugar snacks, however they’ll pressure digestion and trigger that sluggish, weighed-down feeling that makes fasting tougher the subsequent day.
And sure, even “wholesome” drinks like smoothies or fancy espresso orders can sneak in sufficient energy to interrupt your quick with out you realizing it.
If you need the total advantages of intermittent fasting, it’s value realizing what to keep away from throughout intermittent fasting and saving these meals for the fitting time in your consuming window. That’s why my information to meals to keep away from whereas fasting goes to make clear every part for you.
Widespread Meals to Keep away from Whereas Intermittent Fasting
When individuals discuss intermittent fasting, the main target is normally on what to eat when your consuming window opens.
Sure, that issues for certain, however the flip aspect – realizing what meals to keep away from whereas intermittent fasting – is simply as essential. I’ve seen individuals crush their quick all morning, solely to undo all that progress with one snack or drink they didn’t even assume twice about.
The factor is, once you’re fasting, your physique’s operating on a unique rhythm, proper? So, your insulin is decrease, your digestion will get a break, and also you’re principally primed to burn fats for power.
However the fallacious meals on the fallacious time? It could actually throw that off in minutes. We’re speaking about blood sugar spiking, cravings kicking in, and your starvation management going out the window.

Listed here are the large classes of meals to keep away from throughout intermittent fasting if you happen to really need the advantages you’ve been working for. And I’m not saying these meals are “dangerous” usually – simply know when to eat them, and once they’re going to work in opposition to you.
Sugary Meals and Desserts
Let’s begin with the essential meals to keep away from whereas intermittent fasting: sugar, snacks, and desserts. Sweet, pastries, donuts – principally something that’s loaded with sugar – can mess along with your quick in a minute.
These aren’t simply empty energy; they’re a direct hit to your blood sugar. As soon as it spikes, your insulin degree jumps, and your physique switches out of fat-burning mode.
That’s why you’ll typically get that fast burst of power, adopted by a crash that leaves you looking for increasingly more sugar. For those who’re critical about preserving cravings down whereas fasting, save the desserts for a deliberate deal with throughout your consuming window, not mid-fast.

Refined Carbs
White bread, common pasta, crackers – these might sound innocent in comparison with sweet & the above-mentioned snacks, however your physique treats them virtually the identical manner, consider it or not.
They break down quick, increase blood sugar, and don’t maintain you full for lengthy. To simplify this: it means you’re hungrier sooner, and fasting turns into extra of a psychological battle & problem than it must be.
For those who’re opening your consuming window, go for carbs which have some fiber and vitamins in them. They’ll offer you regular power as a substitute of a spike and crash. You’ll be able to all the time examine the intermittent fasting plan I’ve written on my weblog to get some concepts.
Processed Snacks and Junk Meals
Chips, packaged crackers, quick meals fries – these are a double drawback. They’re excessive in energy and low in diet, and so they’re designed to be so addictive.
You assume you’ll have a handful and transfer on, however abruptly the bag’s empty, and also you’re questioning what simply occurred?!
Additionally, these snacks and junk meals are usually excessive in sodium and unhealthy fat, which might depart you feeling bloated and sluggish. Not precisely the sensation you need after sticking to a quick, am I proper?
Excessive-Calorie Drinks
This one really surprises a variety of you. Espresso loaded with cream and syrup, smoothies, soda, power drinks, even alcohol – they’ll all break your quick quicker than you assume.
To be trustworthy, liquid energy go down simply, however they nonetheless set off the identical responses in your physique as stable meals. Which suggests? Effectively, this implies the fat-burning pause button will get hit, and your starvation can spike proper after.
If you wish to drink one thing throughout your fasting hours, keep on with water, black espresso, or unsweetened tea. It’s boring, I do know, but it surely retains you in that fasting zone.
Last Ideas
If there’s one factor I’ve realized watching individuals attempt intermittent fasting, it’s that the “what meals to keep away from” half is manner simpler to disregard than the “what to eat” half. However skipping it?
As talked about a number of occasions on this article, that’s the place issues can go sideways quick. Choosing the proper meals isn’t about being flawless – it’s about stacking the chances in your favor so that you’re not battling cravings each different hour.
If you lower out the same old troublemakers – sugary meals, refined carbs, processed snacks, high-calorie drinks – you make fasting really feel lighter, virtually simpler, as a result of your physique isn’t consistently spiking and crashing. And that’s the entire level: make it one thing you may really keep on with.
So sure, begin easy.
Bear in mind to be constant. Take note of how your physique feels once you keep away from the stuff that messes along with your progress.
And if you happen to want concepts to maintain your consuming window full of excellent meals that also tastes superb, there’s a complete world of recipes and guides right here on Match Males Prepare dinner ready for you.
FAQs About Meals to Keep away from Whereas Intermittent Fasting
Meals to keep away from whereas intermittent fasting embody sugary snacks, refined carbs, fried meals, and processed junk. These can spike blood sugar, set off cravings, and make fasting tougher to keep up.
Sure, synthetic sweeteners can generally break a quick by triggering an insulin response. Whereas calorie-free, they could nonetheless have an effect on starvation and cravings. Finest to skip them throughout fasting hours.
The perfect meals whereas intermittent fasting is nutrient-dense, complete meals – lean proteins, greens, wholesome fat, and slow-digesting carbs that help satiety and regular power throughout your consuming window.
Sure, there are. Meals that make fasting tougher embody high-sugar treats, refined carbs, and greasy processed snacks. These may cause power crashes and stronger starvation throughout your subsequent quick.
Drinks protected throughout intermittent fasting are plain water, black espresso, and unsweetened tea. Keep away from any with sugar, milk, or cream, as they’ll break your quick.