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 utterly trustworthy, even small slip-ups can throw off your outcomes, particularly in the event you’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 together with your blood sugar, set off cravings, or preserve you hungrier than earlier than.
However, the excellent news? Nicely, as soon as you realize the large offenders, it’s simpler to dodge them and deal with the meals that make fasting really feel doable.
Let’s stroll by way of what meals to keep away from throughout intermittent fasting, why it issues, and what you’ll be able to seize as a substitute.
Why Sure Meals Can Disrupt Your Quick?
While you’re fasting, the entire level is to offer your physique a break from digesting meals so it could actually deal with different issues, reminiscent of burning saved vitality, regulating blood sugar, and perhaps even lowering somewhat irritation. The issue is, some meals (and drinks, in fact) pull you proper out of that zone earlier than you even notice it.

Sugary snacks are undoubtedly one of many quickest methods to spike your insulin, which shuts down fat-burning and may go away you hungrier than you have been earlier than that meal.
The identical factor is with refined carbs. Your physique digests them shortly, blood sugar shoots up, then crashes. Instantly, you’re not simply serious about your subsequent meal – you’re combating off cravings that really feel pressing.
Additionally, greasy, heavy meals may be simply as disruptive. To be truthful, they received’t essentially elevate blood sugar the identical approach as sugar snacks, however they will pressure digestion and trigger that sluggish, weighed-down feeling that makes fasting more durable 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’d like the total advantages of intermittent fasting, it’s price understanding what to keep away from throughout intermittent fasting and saving these meals for the best time in your consuming window. That’s why my information to meals to keep away from whereas fasting goes to make clear all the things for you.
Widespread Meals to Keep away from Whereas Intermittent Fasting
When folks speak about intermittent fasting, the main target is normally on what to eat when your consuming window opens.
Sure, that issues for positive, however the flip aspect – understanding what meals to keep away from whereas intermittent fasting – is simply as vital. I’ve seen folks crush their quick all morning, solely to undo all that progress with one snack or drink they didn’t even suppose twice about.
The factor is, once you’re fasting, your physique’s operating on a distinct rhythm, proper? So, your insulin is decrease, your digestion will get a break, and also you’re principally primed to burn fats for vitality.
However the improper meals on the improper time? It might probably throw that off in minutes. We’re speaking about blood sugar spiking, cravings kicking in, and your starvation management going out the window.

Listed below are the large classes of meals to keep away from throughout intermittent fasting in the event you really need the advantages you’ve been working for. And I’m not saying these meals are “unhealthy” basically – simply know when to eat them, and once they’re going to work towards 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 together 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 vitality, adopted by a crash that leaves you attempting to find an increasing number of sugar. When you’re critical about conserving 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 may appear innocent in comparison with sweet & the above-mentioned snacks, however your physique treats them nearly the identical approach, imagine it or not.
They break down quick, elevate blood sugar, and don’t preserve you full for lengthy. To simplify this: it means you’re hungrier sooner, and fasting turns into extra of a psychological struggle & problem than it must be.
When you’re opening your consuming window, go for carbs which have some fiber and vitamins in them. They’ll provide you with regular vitality as a substitute of a spike and crash. You possibly can all the time test 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 downside. They’re excessive in energy and low in vitamin, they usually’re designed to be so addictive.
You suppose you’ll have a handful and transfer on, however instantly 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 go away 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, vitality drinks, even alcohol – they will all break your quick sooner than you suppose.
To be trustworthy, liquid energy go down simply, however they nonetheless set off the identical responses in your physique as stable meals. Which implies? Nicely, 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, follow water, black espresso, or unsweetened tea. It’s boring, I do know, nevertheless it retains you in that fasting zone.
Last Ideas
If there’s one factor I’ve realized watching folks strive intermittent fasting, it’s that the “what meals to keep away from” half is approach 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.
While you reduce out the same old troublemakers – sugary meals, refined carbs, processed snacks, high-calorie drinks – you make fasting really feel lighter, nearly simpler, as a result of your physique isn’t continuously spiking and crashing. And that’s the entire level: make it one thing you’ll be able to really follow.
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 together with your progress.
And in the event you want concepts to maintain your consuming window full of fine meals that also tastes superb, there’s an entire world of recipes and guides right here on Match Males Cook dinner ready for you.
FAQs About Meals to Keep away from Whereas Intermittent Fasting
Meals to keep away from whereas intermittent fasting embrace sugary snacks, refined carbs, fried meals, and processed junk. These can spike blood sugar, set off cravings, and make fasting more durable to take care of.
Sure, synthetic sweeteners can typically break a quick by triggering an insulin response. Whereas calorie-free, they might nonetheless have an effect on starvation and cravings. Finest to skip them throughout fasting hours.
One of the best meals whereas intermittent fasting is nutrient-dense, entire meals – lean proteins, greens, wholesome fat, and slow-digesting carbs that help satiety and regular vitality throughout your consuming window.
Sure, there are. Meals that make fasting more durable embrace high-sugar treats, refined carbs, and greasy processed snacks. These could cause vitality 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 will break your quick.