Why Do I Feel Dizzy After Eating Sugar? What You Need to Know About Sweet Treats

“I’m dizzy after eating sugar!” But “Why do I feel dizzy after eating sugar?” it’s not your imagination! Many people are left with a tired or completely woozy feeling after they have added sugar in any amount. It doesn’t start out that way though. You may be wondering, “Why do I feel dizzy after eating sugar, especially when I feel so good at first?”

Good question! That’s because sugar gives you a high, but eventually, you’ll topple right down to the ground from that initial boost of energy and cheery feelings. Some call this a “sugar hangover” though you can call it whatever you like. All you need to know is that sugar is the cause of you feeling dizzy, tired, and unbalanced shortly after eating it.

Feel dizzy eafter eating sugar ?

We tell you why Sugar Makes You Feel Awful

Why do I feel dizzy after eating sugar? Your dentist may not care that you feel dizzy after eating sugar, for their warning will be all about the health of your teeth. Your doctor, however, will certainly have something to say about the way sugar impacts more than your oral health.

But before you freak out about all sugar, please remember that not all of it is bad. For example, when you bite into a crisp, juicy apple, it has natural sugars. This isn’t going to give you quite the crash that leads to you asking why you feel dizzy after eating sugar.

The reason why you feel dizzy after eating sugar is because of the sudden spike of blood sugar after eating. The high level of sugar influence a lot your blood pressure and make you feel dizzy.

The sugar that’s found in your favorite treats like donuts, cookies, cupcakes, and candy is completely different from the sugar you get from apples and other fresh foods. The sugar in fruits, vegetables, and dairy foods are naturally-occurring and you don’t really need to worry about them unless you have diabetes.

sugar per day overload calculator (in teaspoons)

What type of sugar is making you the most dizzy ?

Everyone should worry about the added sugars in foods. Why do I feel dizzy after eating something that isn’t a dessert though? Well, for that, you need to look a little more closely at the label. Certain foods we eat have added sugars that are hidden in them.

Some of them are obvious like that sweet and smokey can of baked beans, fruit cocktail in a can, or condiments like ketchup and BBQ sauce. But savory salad dressings may have them too and so too will other foods that you would never expect added sugars to pop up. This type food is why you are dizzy after eating sugar.

So, you may be feeling dizzy because these hidden added sugars are spiking your energy, then leaving you zapped. Perhaps this is why so many people have that slump of energy after lunch. You should look to what you’re eating to cut out those added sugars so you’ll feel more balanced.

Unless you have diabetes, having something sugary as a treat here and there shouldn’t be a problem. Women shouldn’t consume more than 25g of sugar a day, and for men, no more than 36g, or to put it more simply, 6 teaspoons for women and 9 teaspoons for men.

Doing so will leave you feeling completely uneven. And there’s another reason for why you feel dizzy after eating sugar too. When you eat too much sugar, it triggers inflammation in your body, which is never a good thing. Chronic inflammation is what sets of many diseases, something you’ll most certainly want to avoid.

Sugar dose in food, feeling dizzyWhat quantity per day of sugar do you need to not be dizzy ?

Furthermore, while eating sugar can make you dizzy, it also depends on how much of it you’re eating, and how you’re eating it. Consuming something that’s straight sugar, like cotton candy is far different than eating something with sugar that also contains protein, fiber, and fat. The reason you feel dizzy after eating sugar is because of the imbalance it creates with your blood sugar.

  • To not feel dizzy, you must not eat more than 9 teaspoons of sugar a day (36 grams or 150 calories of sugar). Women need less sugar than men. A woman need not more than 6 teaspoons of sugar per day (that’s only 25 grams of sugar and / or 100 calories).

In a pinch, if you’re left with only a vending machine to grab something from while at work or stuck at a car dealership waiting for your mechanic to complete an oil change, choose something that has a balance of other ingredients. For example, a Snickers is a better choice over a plain Hershey bar because you’re getting protein from the nuts in the Snickers. While it’s not an ideal meal by any means, it’s better than going hungry.



What are the consequences of Eating Too Much Sugar ?

Feeling dizzy after eating sugar is the consequence for eating too much of it. It’s tempting to grab a sugary snack or gulp down a soda, for in the moment, you’ll feel good. Hours later though, that will change.

Those simple sugars will cause spikes in your blood sugar. When that happens, you may experience:

With high and low blood sugar, glucose is the main source of energy for your brain cells. These neurons need double the energy as your other cells. Simple carbs like sugar break apart easily and go right into the blood stream.

This gives your blood sugar a sudden increase and then your pancreas secretes insulin. When this spikes, it causes glucose to be absorbed rapidly by your cells which leads to a drop in glucose. Now that those neurons don’t have their energy source at the ready, you’ll feel a bit funny.


What are the long term effect on body of eating sugar ?

We explained you the short-term results of, feeling dizzy . The long-term consequences of consuming sugar may lead to a greater risk for type 2 diabetes. There are direct correlations between eating too much simple sugar and the development of this disease. It is believed that these simple sugars interrupt the normal insulin process. Additionally, these simple sugars lead to added weight gain because the give you more calories than you need.

Often, calories from simple sugar leave you feeling dizzy because they do not give you any other nutrients. Eating 100 calories of a sugary candy is different from eating 100 calories worth of fruit because you’re getting vitamins, minerals, antioxidants, and fiber from fruit to sustain you but only sugar from the candy.

Carbohydrates are ranked in the glycemic index by how much they raise your blood sugar on a scale from 0 to 100. The higher the glycemic index (GI) score, the more quickly it is digested and more likely to send your blood sugar levels soaring. Anything with a score of 55 or below is considered to be low glycemic.

Why do I feel dizzy after eating sugar ?What type of  Sugar to eat to no feel Dizzy ?

While you should certainly minimize how many added sugars you consume daily, you can still enjoy some of your favorite things if you follow a few smart tips. There is different types of sugars, some are worst than others.

  • Stay in the recommended range of sugar per day

When eating sugar, keep in mind the daily recommended amount you should consume. Keeping it at this level will prevent you from asking yourself, “Why do I feel dizzy after eating sugar?”

Additionally, you shouldn’t eat that sugar all in one sitting. Space it out throughout the day and it will be easier for your body and your blood sugar.


  • Eat sugar with other nutrients

If you eat something that is almost pure sugar, you won’t feel well later. Eating something that has sugar balanced with protein, fiber, and fat will result in a more balanced feeling.


  • Make your own desserts with less sugar

While eating sweets is often too hard to resist, a better way is to make them yourself at home. Pre-packaged sweets have more preservatives in them. As for fresh-baked goods from the bakery, you can’t control the amount of sugar in them. At home though, you can reduce the amount of added sugars you put in your recipes and cut down on how much sugar you consume while still enjoying dessert.


  • Know the right swaps

Desserts can also be made with fruits to naturally sweeten them. Consider freezing bananas to blend into ice cream for a refreshing dessert that tastes extravagant. Adding certain spices can also make up for the reduced amount of sugar you use. When you add cinnamon or nutmeg, it adds a naturally sweet element without relying on sugar.


  • Watch where your sugars are hiding

If you don’t want to feel dizzy after eating sugar, pay attention to the foods you buy and watch for those hidden sugars. You can make your own sauces, marinades, and dressings without any sugar using those sweet flavors from your spice rack.

Additionally, if you’re a habitual coffee or tea drinker, look there first to cut down your sugar intake. By adding sugar to your beverages, you’re likely getting more sugar than you need every day and setting yourself up for a dangerous situation down the road.

Bottom line – too much sugar is the reason you feel so dizzy later in the day. It’s not a good sign, so take notice and start making changes for the benefit of your health and longevity.



Conclusion about the link between Diziness and Sugar

If you feel dizzy eating sugar and sweets, it might be for one of these 3 reasons :

  • Indigestion – If you eat a lot of sugary foods, you may be suffering from simple indigestion. In addition to the vomiting that is often associated with it, indigestion can also cause headaches, abdominal pain or bloating.
  • Fructose intolerance – People who are intolerant to fructose (found in fruit, soft drinks or wheat products) may experience abdominal pain, vomiting or various stomach upsets. In the long term, this intolerance can lead to liver and kidney damage.
  • Diabetes mellitus – Someone with this type of diabetes develops resistance to insulin, the hormone that helps regulate blood sugar levels among other things. The accompanying high blood sugar levels can lead to symptoms such as severe fatigue or blurred vision and weight gain.

What you need to do if you are lightheaded after eating sugar :

  • You need to see a Doctor as he will be in better position to diagnose and prescribe appropriate treatment.
    If you suspect an allergy or intolerance to fructose or glucose, you can first take an allergy test.
  • After the test, it will be possible to adjust your diet according to the results obtained. With the help of a nutritionist, you can build a diet adapted to your condition.



It goes without saying that a balanced diet can prevent many ailments. Many foods, such as eggplant, carrots, lemons and spinach, contain little fructose.

Finally, remember that a balanced diet can help counter many symptoms and prevent some metabolic disorders related to the consumption of sugary foods like lightheadedness or dizziness.



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