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The Global Insight

What does diet soda do to your brain

Author

Andrew Campbell

Updated on April 04, 2026

Some research suggests that those who drink diet soda have higher activity in the area of the brain associated with the desire to consume foods high in fat and sugar. So those who drink diet soda seem to alter the brain’s sweet-sensing reward center.

What happens if you drink diet soda everyday?

A growing body of evidence suggests that diet soda consumption correlates with an increased risk of a wide range of medical conditions, notably: heart conditions, such as heart attack and high blood pressure. metabolic issues, including diabetes and obesity. brain conditions, such as dementia and stroke.

Does soda affect your brain?

Framingham Heart Study researchers found that those who consume excess sugar in the form of fructose (found in most sodas and fruit juices) had poorer memory, smaller overall brain volume, and a significantly smaller hippocampus — the part of the brain first attacked by Alzheimer’s.

Is diet Coke bad for your mental health?

Sweetened Drinks Linked to Depression, Coffee Tied to Lower Risk. SAN DIEGO – New research suggests that drinking sweetened beverages, especially diet drinks, is associated with an increased risk of depression in adults while drinking coffee was tied to a slightly lower risk.

What does aspartame do to the body?

Dozens of studies have linked aspartame — the world’s most widely used artificial sweetener — to serious health problems, including cancer, cardiovascular disease, Alzheimer’s disease, seizures, stroke and dementia, as well as negative effects such as intestinal dysbiosis, mood disorders, headaches and migraines.

Does diet soda release dopamine?

Caffeine and aspartame increases dopamine levels as shown in various studies. Aspartic acid taken in its free form (unbound to proteins), significantly raises the blood plasma level of aspartate and glutamate. “Researchers say glutamate is more essential to addiction than dopamine.”

Is it bad to drink 2 liters of diet soda a day?

Drinking a reasonable amount of diet soda a day, such as a can or two, isn‘t likely to hurt you. The artificial sweeteners and other chemicals currently used in diet soda are safe for most people, and there’s no credible evidence that these ingredients cause cancer.

Can diet soda depression?

The analysis revealed that people who drank more than four cans or cups of diet soda a day had about a 30% higher risk of developing depression over the follow-up period than those who drank none. Those who drank regular soda had a 22% higher risk.

Does Diet Coke shrink your brain?

Researchers using data from the Framingham Heart Study (FHS) found that people who drink sugary beverages frequently are more likely to have poorer memory, smaller overall brain volume, and a significantly smaller hippocampus—an area of the brain important for learning and memory.

What drinks are bad for the brain?

Soda and Other Sugary Drinks Research has found that people who drink a lot of soda, sweet tea, and other sugary beverages are a lot more likely to have memory trouble. These drinks, which often have a type of sugar called fructose, might even cause certain parts of your brain to become smaller.

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Can diet soda cause a stroke?

Researchers found that drinking artificially sweetened beverages was associated with an increased risk of stroke, heart disease and even death. Women who drank two or more diet drinks a day had a 23% increase in stroke risk when compared with women who drank diet drinks less than once per week.

Does soda boost serotonin?

Just as foods can raise levels, some foods and drinks can lower levels below where they need to be to maintain a sense of well-being. Alcohol tends to decrease serotonin, as do artificial sweeteners. Avoid diet sodas because they do nothing to help serotonin levels at all.

Can aspartame cause neurological problems?

Aspartame (α-aspartyl-l-phenylalanine-o-methyl ester), an artificial sweetener, has been linked to behavioral and cognitive problems. Possible neurophysiological symptoms include learning problems, headache, seizure, migraines, irritable moods, anxiety, depression, and insomnia.

Is aspartame bad for your kidneys?

Aspartame, either used alone or in combination with other low-calorie sweeteners, is the most common low-calorie sweetener found in diet sodas today. Aspartame never reaches the kidneys or other body organ.

Is stevia better than aspartame?

“Stevia leaf extract is safer than many other sugar substitutes, especially aspartame and sucralose,” Lefferts says. Research has linked sucralose, aspartame, and saccharin with cancers.

How much diet soda is too much in a day?

But, like many foods containing artificial additives, there is a safe daily limit. An average adult should consume no more than 40 milligrams of aspartame per kilogram of body weight per day. To exceed the limit, most people would need to drink at least 14 cans of diet drinks a day.

What makes Diet Coke so addictive?

The average can of Diet Coke contains 42mg of caffeine, the equivalent of roughly two-thirds of a shot of espresso. Caffeine is a medically recognised addictive substance that, when taken in excess, activates the brain’s reward circuitry.

Why is McDonald's Diet Coke so good?

Most fast food joints get their Coca-Cola syrup sent to them in plastic bags (yuck). But McDonald’s is all about the stainless steel containers, which keeps the soda fresher for longer. … They’re intentionally thick AF, which allows for the Diet Coke to hit every one of your taste buds.

Does aspartame cause brain fog?

Artificial sweeteners such as sucralose (Splenda) and Aspartame (NutraSweet and Equal) can have devastating effects on your brain, as well as your overall health. Splenda can cause a spaced-out sensation, brain fog, depression, migraines, headaches, seizures, dizziness and anxiety.

What are the symptoms of too much aspartame?

Breathlessness, elevated blood pressure and skipped or racing heartbeat are all symptoms of aspartame toxicity. Gastrointestinal Symptoms. People often experience an upset stomach, diarrhea (possibly bloody), abdominal pain and painful swallowing when using aspartame as a sweetener.

Does aspartame have any side effects?

Authors of a 2017 review concluded that aspartame may affect the immune system and, as a result, it may lead to oxidative stress and inflammation. Their findings suggested that aspartame could affect the cells of various body organs, including the brain, the heart, the liver, and the kidneys.

Why does diet Coke give me headaches?

May cause headaches This may be due to certain artificial sweeteners found in diet soda, such as aspartame. According to some research, aspartame is linked to several side effects when consumed in high amounts. Side effects may include ( 11 , 12 ): headaches.

Can aspartame cause Alzheimer's?

Aspartame’s role in memory loss is a health concern that has been associated with artificial sweeteners. Several studies have been conducted on aspartame’s effect on cognitive function in both animals and humans. These studies found no scientific evidence of a link between aspartame and memory loss.

Is diet Coke bad for anxiety?

Not exactly. You may not have the energy crash that comes with having too much sugar, but diet soda may make you depressed. In fact, it could make you feel more down than its sugary cousin would. Too much of the caffeine that many sodas have can be bad for anxiety, too.

What food is bad for anxiety?

  • Cakes, cookies, candy and pies.
  • Sugary drinks.
  • Processed meats, cheese and ready-made meals.
  • Coffee, tea and energy drinks.
  • Alcohol.
  • Fruit and vegetable smoothies with high glycemic indexes.
  • Gluten.
  • Artificial sweeteners.

What drink is good for anxiety?

  • Chamomile Tea. Chamomile tea is a sweet and tasty beverage that is renowned for its calming effects. …
  • Green Tea. Green tea is famous for its health benefits. …
  • Passionflower Tea. …
  • Lemon Balm Tea. …
  • Rose Tea. …
  • Peppermint Tea. …
  • Valerian Root Tea. …
  • Lavender Tea.

What foods heal the brain?

  • Green, leafy vegetables. Leafy greens such as kale, spinach, collards, and broccoli are rich in brain-healthy nutrients like vitamin K, lutein, folate, and beta carotene. …
  • Fatty fish. …
  • Berries. …
  • Tea and coffee. …
  • Walnuts.

What are the 3 foods that fight memory loss?

What are the 3 foods that fight memory loss? If you’re asking for 3 foods that fight memory loss, berries, fish, and leafy green vegetables are 3 of the best. There’s a mountain of evidence showing they support and protect brain health.

What are the 3 foods to never eat?

  • White flour.
  • Bread.
  • Pasta.
  • Rice.
  • Baked goods.
  • Snack goods.
  • Breakfast cereals.

Can diet soda raise blood pressure?

Diet soda has also been linked to increased risks of high blood pressure and heart disease. A review of four studies including 227,254 people observed that for each serving of artificially sweetened beverage per day, there is a 9% increased risk of high blood pressure.

What foods can trigger a stroke?

  • Processed Foods That Contain Trans Fat. Processed foods or junk foods, such as crackers, chips, store-bought goods and fried foods, typically contain a lot of trans fat, a very dangerous type of fat because it increases inflammation in the body. …
  • Smoked And Processed Meats. …
  • Table Salt.