Written by Brittni Bresee on
July 7, 2021
Reading Time: 8 minutes

Medically Reviewed by our Medical Affairs Team

Written by Brittni Bresee on:

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The sugar in your diet is affecting your brain and body…. and not in a good way. Does sugar cause brain fog?

Sugar affects the brain by releasing dopamine, which makes us feel good, but also causes a craving for more sugar. This can lead to an addiction that’s hard to break. Sugary foods also cause inflammation in the body, leading to weight gain and other health problems like diabetes or heart disease.

It’s time for you to make a change! Learn how sugar affects the brain and how it affects the brain so you know what you’re up against when it comes to making healthy choices. You deserve better than this cycle of poor choices that will only hurt your physical and mental health over time if left unchecked.

Sugar’s Reward Response

It has been found that high-glycemic foods make people feel good and hungry. Low-glycemic foods do not have this effect.

Low glycemic foods do not activate this area, which is why it may be wise to avoid sugar when you’re hungry for something sweet. Sugar also affects our brains in other ways such as releasing dopamine, which makes us feel good but also causes a craving for more sugar. This can lead to an addiction that’s hard to break if left unchecked!

The information in this article should help you make better choices about what types of food to eat and drink. This is so that you can start feeling like yourself again soon.

The brain has what is called the sugar reward system. This is a network of circuits that are comprised of dopamine-producing cells. These cells release dopamine, one of the brain’s chemicals, when we eat sugar. This dopamine makes people feel good and crave more sugar in order to get that feeling again.

The problem with this system is it can lead to addiction if left unchecked because the addiction makes people want to find ways to continue feeling good and avoid withdrawal symptoms.

It can also cause other health issues such as weight gain and diabetes. It’s time for you to make a healthy change!

Sugar Addiction

Previous research has shown that overeating negatively impacts one’s brain’s reward system. This drives people back to overeating.

It’s time for you to make a change! Learn how sugar affects the brain so you know what you’re up against when it comes to making healthy choices. You deserve better than this cycle of poor choices that will only hurt your physical and mental health over time if left unchecked.   

Sugar addiction is often overlooked in today’s society. Chronic overeating causes inflammation in the body leading to weight gain and more serious problems. like diabetes or heart disease.

It may be wise not just limit yourself to sweets on occasion. Instead learn how sugar affects your brain by going cold turkey with food that triggers dopamine release. This makes us feel good but also creates cravings for more sugary foods too.

The rewards  can be great if you are willing to make this important change. You deserve to live a life free of addiction and all the negative side effects that come along with it!

Proper Nutrition as an Aid for Sugar Addiction?

A study has found that when rats are subjected to sugar, they experienced changes in their dopamine receptors. This made them more vulnerable to addictive substances, such as nicotine.  

Research has shown that our brains are affected by foods through the release of dopamine and other neurotransmitters. It is also possible that proper nutrition may help someone break a cycle of poor diet choices.

How Sugar Impacts Memory

The human body is not meant to digest high levels of sugar, which negatively impacts the brain. Consuming too much sugar can lead to  slowed cognition and memory deficits.

Sugar has been found to affect the brain in a variety of ways. One way sugar affects the body is by releasing dopamine, which makes us feel good but also causes cravings for more sweet foods too. Sugar addiction can be hard to break if left unchecked and proper nutrition may help someone break a cycle of poor diet choices such as overeating.

It’s important that you understand how sugar impacts your memory so it doesn’t slow down your cognition. This can cause other problems like slowed thinking and diminished recall abilities later on. 

Eating sugary food will make you more unhealthy. So stop eating it!

How Much Sugar Is Too Much?

According to The World Health Organization (WHO), adults should not consume more than 25 grams or 6 teaspoons of sugar per day. An average-sized soda contains about 40grams of sugar.

The average American consumes 22 teaspoons of sugar a day. The WHO recommends that people take in an amount of no more than 5 percent  of the calories they consume. In other words, you should be taking about 5% of your total caloric intake in sugar.

The Dangers of Sugar Overdose (Hyperglycemia)

Blurry vision and confusion are a few symptoms that may occur when blood sugar levels become too high. This is hyperglycemic shock or hyperglycemia. 

Insulin is a hormone that tells your body to take sugar from the blood and put it into the cells. When levels become too high, this can lead to insulin resistance leading to diabetes.

If someone becomes hyperglycemic because of a high sugar intake, then he or she should consume less sugar and get more active.

Sugar Has Effects on Mood

Eating sugar can also affect mood. In a study, people who could process emotions did worse on a neural imaging exam if their blood sugar was high.

Sugar causes blood sugar levels to spike, which can lead to depression. This is because too much sugar can double your risk for depression within a  year. Sugar creates an imbalance in the brain that can trigger depression and anxiety.

Judging by the amount of sugar that most people consume on a daily basis, it is clear that sugar addiction is quite common. One of the main problems with this is that you can become resistant to insulin. In turn, you will be more at risk for diabetes.

Sugar Can Cause Gut Dysbiosis (Candida Overgrowth)

People who are addicted to sugar are usually also addicted to carbs. People with blood sugar imbalances tend to crave carb-rich foods, which upsets the balance of good bacteria in your gut.

When there is an excess of bad bacteria in your intestines, it’s called Candida overgrowth or yeast infections. These conditions cause major stomach problems, as you will learn about below.

If someone has a large amount of candida yeast growing inside his or her intestines then they may experience numerous symptoms. A few might be low energy, bloating and gas after too much sugar consumption.

The Dangers of Bad Bacteria Overgrowth (Yeast Infection)

The majority of your body’s immune system is located in the digestive tract. This leaves you vulnerable to infections from bacteria and yeast. A Candida  yeast infection in your gut can do serious damage if it spreads throughout your body via the bloodstream. It can cause inflammation that restricts blood flow through arteries. This will lead to heart diseases such as angina and heart attacks. It can also lead to pulmonary embolisms by obstructing blood flow through lungs.  

If someone has a lot of bad bacteria in their intestines, then they will have many symptoms. These can include feeling tired, having too much air in their stomach and gas after eating sugary foods.

The interesting thing here is your gut is your second brain and if your gut is all clogged and filled with toxic bacteria… it can also lead to brain fog.

No matter what you may have been taught about sugar, there is a thing as too much sugar… especially if you want a healthy mind.

Sugar Does a Number on Your Liver

Excess sugar can cause major damage to the liver, which is the organ that processes and cleanses the body of harmful substances. Sugar causes an increase in triglycerides, harmful fats found in your blood. This leads to fatty buildup inside the liver cells.  

A person’s ability to manage stress is also impaired when they are consuming too much sugar.  

This can lead to further health problems like anxiety and depression. Sugars encourage bad bacteria growth in your gut which affects how you think and feel, making you more prone to emotional upsets.

Sugar Intake Hinders Mental Capacity

Elevated blood sugar will cause damaging effects on your body, including damage to the vessels in your body.

This is a major problem for people who have diabetes. It makes their glucose levels change and it also causes other problems like eye diseases and kidney problems.

Sugar intake can affect your mental capacity, memory and focus. It also makes it harder for you to concentrate on anything for a long period of time.  

Your Diet Does Matter  When It Comes To Brain Fog

The answer is yes, but not all sugars are alike. If you must eat something sweet then opt for organic raw honey or organic maple syrup. These contain trace nutrients that help to nourish the body. in place of processed sugar and artificial chemicals found in most commercial sweets.

Because your gut health is so vital to brain health, your diet is absolutely crucial to a healthy brain.  Food affects mood, behavior and health. Some foods can improve your mental performance while others, like sugar cause brain fog .

Eating a diet that is high in sugar causes damage to the gut lining.  This then contributes to something called leaky gut syndrome. This syndrome interferes with the body’s ability to absorb vitamins needed for healthy brain function.

Sugar cravings will never go away if you keep feeding them with bad sugars and processed foods, so it is best to eliminate them from your life.  

Eating too much sugar can cause bad things to happen in your body. It can cause damage to the lining of your intestines and make it so that you cannot properly digest vitamins needed for healthy brain function.

Does sugar cause brain fog?

So then, does sugar actually cause brain fog?

It seems that sugar does indeed cause brain fog. Sugar intake hinders mental capacity, memory and focus. It also makes it harder for you to concentrate on anything for a long period of time. Luckily we can reverse this trend by eliminating sugar from our diets and focusing on eating a diet that is high in nutrients.

Best Sugar Alternatives

Many think that ‘health’ sugars out there are gross, but in fact there are many different alternatives to cane sugar that you should consider.

  1. Maple syrup:  Maple syrup is a great alternative because it is not processed and contains trace nutrients that help to nourish the body.
  2. Coconut sugar: Coconut sugar is made from the sap of coconut tree flowers. It has a rich, caramel flavor that tastes great in baked goods and coffee.  
  3. Honey: Raw honey can be used just like table sugar, though it does have slightly more carbs (about 3 grams/tablespoon instead of 2).  Raw honey carries numerous health benefits; check out this article for details!
  4. Stevia: Stevia comes from the stevia plant (it’s completely natural). One teaspoon of liquid stevia or about 1/4 cup dried leaves will give your recipe a sweet taste with very few carbs.
  5. Coconut nectar:  Coconut nectar has a mild sweetness and is made from coconut blossom nectar, like maple syrup. It contains trace minerals that are good for the body. It is less sweet than honey or stevia, so you may need to use a little more in place of sugar if baking.

Consequences of excess sugar consumption

Too much sugar in your blood stream could be harmful for your heart in two ways.  First, it increases the risk of cardiovascular disease. Too much sugar increases LDL cholesterol which is bad for the body because it causes plaque buildup in the arteries. Secondly, when you eat a diet high in sugar then you are less likely to sleep well. Lack of sleep has been linked to cardiovascular disease as well as other health complications.

Sugar overdose can also cause brain fog, and too much sugar is not ideal for anyone’s mental health or physical wellbeing. Eating a diet that contains too much sugar can lead to diabetes and obesity, both of which come with a variety of serious medical problems.


The sugar and food addiction epidemic is in full force. Sugar has been shown to have a number of negative effects on the body. A few are increased risk for obesity and diabetes, mood swings (including depression), gut dysbiosis (Candida overgrowth). These all can result in yeast infections and brain fog, liver damage, impairs cognitive function among other things.

One way to help break this vicious cycle of sugar consumption?

Proper nutrition!

Eating healthy foods like fruits and vegetables while limiting or eliminating processed sugars may be one option that will work for some people who are trying to control their intake.

You might want to try our Brain Health Brain Quiz if you’re looking for more information about how your diet impacts your mental capacity!

To make this easier you might want to break your temptation down into smaller pieces so as not to think about the whole situation.  So, if you’re craving ice cream then just buy a single scoop and enjoy it while watching TV in bed or after exercising. Never mind that whole carton of ice cream sitting there! You can always use the money in your pocket, which is presumably why you wanted it in the first place 🙂

Organizing yourself is also crucial to successfully avoiding cheating on any goal. So, try out one of these offline apps designed for people with an online life: Clarity (for Mac and iOS); OmniFocus (an indispensable app for your computer), and be sure to set some reminders right on. 

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