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 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 together with your blood sugar, set off cravings, or hold you hungrier than earlier than.
However, the excellent news? Effectively, as soon as you understand 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 provide your physique a break from digesting meals so it could possibly deal with different issues, reminiscent of burning saved vitality, regulating blood sugar, and perhaps even lowering slightly 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 might depart you hungrier than you had been earlier than that meal.
The identical factor is with refined carbs. Your physique digests them shortly, blood sugar shoots up, then crashes. Abruptly, you’re not simply fascinated about your subsequent meal – you’re combating off cravings that really feel pressing.
Additionally, greasy, heavy meals will be simply as disruptive. To be truthful, they received’t essentially increase blood sugar the identical manner as sugar snacks, however they will 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 would like the complete advantages of intermittent fasting, it’s value understanding 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 thing for you.
Frequent Meals to Keep away from Whereas Intermittent Fasting
When folks speak about intermittent fasting, the main target is often on what to eat when your consuming window opens.
Sure, that issues for certain, however the flip aspect – understanding what meals to keep away from whereas intermittent fasting – is simply as essential. I’ve seen folks 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 vitality.
However the mistaken meals on the mistaken 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 if you happen to really need the advantages you’ve been working for. And I’m not saying these meals are “dangerous” typically – simply know when to eat them, and once they’re going to work towards you.
Sugary Meals and Desserts
Let’s begin with the fundamental 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 stage 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 trying to find an increasing number of 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 may appear innocent in comparison with sweet & the above-mentioned snacks, however your physique treats them virtually the identical manner, imagine it or not.
They break down quick, increase blood sugar, and don’t hold 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 vitality as a substitute of a spike and crash. You may 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 diet, and so they’re designed to be so addictive.
You assume 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 typically excessive in sodium and unhealthy fat, which may 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 number of you. Espresso loaded with cream and syrup, smoothies, soda, vitality drinks, even alcohol – they will all break your quick sooner 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 implies? 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, follow water, black espresso, or unsweetened tea. It’s boring, I do know, however it retains you in that fasting zone.
Ultimate 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 manner simpler to disregard than the “what to eat” half. However skipping it?
As talked about a number of instances on this article, that’s the place issues can go sideways quick. Selecting the best 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 minimize out the standard 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 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 if you happen to want concepts to maintain your consuming window full of excellent meals that also tastes wonderful, 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 tougher to take care of.
Sure, synthetic sweeteners can generally break a quick by triggering an insulin response. Whereas calorie-free, they might nonetheless have an effect on starvation and cravings. Greatest to skip them throughout fasting hours.
The very best meals whereas intermittent fasting is nutrient-dense, complete meals – lean proteins, greens, wholesome fat, and slow-digesting carbs that assist satiety and regular vitality throughout your consuming window.
Sure, there are. Meals that make fasting tougher embrace high-sugar treats, refined carbs, and greasy processed snacks. These may cause vitality crashes and stronger starvation throughout your subsequent quick.
Drinks secure 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.