Lots of people start intermittent fasting with one query in thoughts: What ought to I eat? But the flipside issues simply as a lot – what ought to I keep away from?
To be utterly sincere, even small slip-ups can throw off your outcomes, particularly for those who’re placing within the effort to stick to your eating and fasting home windows. And it’s not nearly energy & counting – some meals can mess together with your blood sugar, set off cravings, or maintain you hungrier than earlier than.
But, the excellent news? Well, as soon as you understand the large offenders, it’s simpler to dodge them and concentrate on the meals that make fasting really feel doable.
Let’s stroll via what meals to keep away from throughout intermittent fasting, why it issues, and what you may seize as a substitute.
Why Certain Foods Can Disrupt Your Fast?
When you’re fasting, the entire level is to give your body a break from digesting food so it may possibly concentrate on different issues, resembling burning saved vitality, regulating blood sugar, and possibly even decreasing just a little irritation. The downside is, some meals (and drinks, in fact) pull you proper out of that zone earlier than you even understand it.
Sugary snacks are positively one of many quickest methods to spike your insulin, which shuts down fat-burning and may depart you hungrier than you had been earlier than that meal.
The identical factor is with refined carbs. Your body digests them rapidly, blood sugar shoots up, then crashes. Suddenly, you’re not simply fascinated with your subsequent meal – you’re preventing off cravings that really feel pressing.
Also, greasy, heavy meals could be simply as disruptive. To be honest, 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 tougher the subsequent day.
And sure, even “healthy” drinks like smoothies or fancy espresso orders can sneak in sufficient energy to break your quick with out you realizing it.
If you need the complete advantages of intermittent fasting, it’s price understanding what to keep away from throughout intermittent fasting and saving these meals for the appropriate time in your eating window. That’s why my information to meals to keep away from whereas fasting goes to make clear every little thing for you.
Common Foods to Avoid While Intermittent Fasting
When folks discuss intermittent fasting, the main focus is often on what to eat when your eating window opens.
Yes, that issues for positive, 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, while you’re fasting, your body’s running on a distinct rhythm, proper? So, your insulin is decrease, your digestion will get a break, and also you’re mainly primed to burn fats for vitality.
But the unsuitable food on the unsuitable time? It can throw that off in minutes. We’re speaking about blood sugar spiking, cravings kicking in, and your starvation management going out the window.

Here are the large classes of meals to keep away from throughout intermittent fasting for those who truly need the advantages you’ve been working for. And I’m not saying these meals are “bad” basically – simply know when to eat them, and after they’re going to work towards you.
Sugary Foods and Desserts
Let’s start with the fundamental meals to keep away from whereas intermittent fasting: sugar, snacks, and desserts. Candy, pastries, donuts – mainly 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. Once it spikes, your insulin degree jumps, and your body switches out of fat-burning mode.
That’s why you’ll usually get that fast burst of vitality, adopted by a crash that leaves you looking for an increasing number of sugar. If you’re critical about maintaining cravings down whereas fasting, save the desserts for a deliberate deal with throughout your eating window, not mid-fast.

Refined Carbs
White bread, common pasta, crackers – these might sound innocent in contrast to sweet & the above-mentioned snacks, however your body treats them nearly the identical approach, consider it or not.
They break down quick, elevate 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 combat & problem than it wants to be.
If you’re opening your eating 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 can all the time examine the intermittent fasting plan I’ve written on my weblog to get some concepts.
Processed Snacks and Junk Food
Chips, packaged crackers, quick food fries – these are a double downside. They’re high in energy and low in nutrition, 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?!
Also, these snacks and junk meals have a tendency to be high 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?
High-Calorie Drinks
This one truly surprises numerous you. Coffee loaded with cream and syrup, smoothies, soda, vitality drinks, even alcohol – they will all break your quick quicker than you assume.
To be sincere, liquid energy go down simply, however they nonetheless set off the identical responses in your body as strong food. Which means? Well, this implies the fat-burning pause button will get hit, and your starvation can spike proper after.
If you need to drink one thing throughout your fasting hours, stick to water, black espresso, or unsweetened tea. It’s boring, I do know, nevertheless it retains you in that fasting zone.
Final Thoughts
If there’s one factor I’ve realized watching folks strive intermittent fasting, it’s that the “what foods to avoid” half is approach simpler to ignore than the “what to eat” half. But skipping it?
As talked about a number of occasions on this article, that’s the place issues can go sideways quick. Choosing the appropriate 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.
When you chop 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 body isn’t always spiking and crashing. And that’s the entire level: make it one thing you may truly stick to.
So sure, start easy.
Remember to be constant. Pay attention to how your body feels while you keep away from the stuff that messes together with your progress.
And for those who want concepts to maintain your eating window full of fine food that also tastes superb, there’s an entire world of recipes and guides right here on Fit Men Cook ready for you.
FAQs About Foods to Avoid While Intermittent Fasting
Foods 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 preserve.
Yes, synthetic sweeteners can typically break a quick by triggering an insulin response. While calorie-free, they could nonetheless have an effect on starvation and cravings. Best to skip them throughout fasting hours.
The finest food whereas intermittent fasting is nutrient-dense, complete food – lean proteins, greens, healthy fat, and slow-digesting carbs that assist satiety and regular vitality throughout your eating window.
Yes, there are. Foods that make fasting tougher 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. Avoid any with sugar, milk, or cream, as they will break your quick.
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