Celsius causes brain fog

Question

Celsius and other caffeinated drinks can lead to brain fog and fatigue.

Comments

I think that this claim definitely has some truth to it, however since the article does not directly call out Celsius, then that leads me to believe that the person to created this claim may have something against the Celsius drink, or maybe the company, considering that the brain fog comes from the caffiene in the drink, then it wouldn't make sense that other drinks containing caffiene would not also cause brain fog.

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I don't agree with this claim at all. Obviously, if you consume too much of something it becomes bad for you. However, Celsius and other energy drinks are made to give you energy and essentially focus on whatever activities you're trying to do.  Celsius is also made with different vitamins and amino acids that help enhance mental clarity and physical performance. Many consumers report increased focus and sustained energy without crashes associated with traditional sugary energy drinks, especially considering that Celsius is made with 0 sugar. If Celsius did lead to brain fog, its products wouldn't be endorsed by so many athletes at both college and professional levels. These are people who's jobs require focus and lots of energy. Rather than blaming energy drinks, I think factors like an individuals diet, hydration levels, and caffeine tolerance .

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This claim “Celsius and other caffeinated drinks can lead to brain fog and fatigue.” is found to be true followed by many harmful effects. Firstly when reading the provided article, the writer never actually states the issues being caused are by the caffeine within the Celsius brand themselves. In this case, the author could have gone to extreme assumptions for this claim to persuade the audeince, despite some truth in the statement. It seems that ther eis no direct correlation with Celsius itself rather than caffeine as a whole casuing brain fog within customers. An external article addresses brain fog in general stearing away from even the effects from caffeine. Brain fog is often linked to chronic fatigue syndrome (CFS), which affects about 1 million Americans. (Roche, 2025). Other validated sources address some negative aspects of caffeine intake; crashes, dehydration, and blood sugar irregualries.  Ultimatley, it is determined that although this claim is true, this specific article coverfing the effects of celsius are untrue and are made assumptions.
Sources: https://www.livestrong.com/article/440331-caffeine-brain-fog/#google_vignette

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This claim that Celcius and other caffeine drinks cause brain fog is shown to be true in this article by providing multiple other sources. The article talks about various health risks most concluding in overuse of caffeinated drinks can cause brain fog. The article also provides multiple other reliable sources to back health concerns relating caffeine. Although the article is convincing, the claim could be biased from a personal experience.

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I agree with the claim to some extent, but I believe the credibility of the article would be significantly enhanced if there were more resources and detailed information specifically about the Celsius drink itself. Providing direct references, studies, or expert opinions related to the product would help strengthen the argument and make it more trustworthy. Additionally, if the claim were framed differently maybe focusing on other aspects or backing up the statement with more concrete evidence the article would appear more credible overall.

Answer 1

There is no direct evidence linking Celsius energy drinks to brain fog. However, the high caffeine content in Celsius—200 mg per 12 fl oz can—can lead to side effects such as anxiety, insomnia, and increased heart rate, especially in individuals sensitive to caffeine. These symptoms might contribute to feelings of mental fatigue or cloudiness. Additionally, the artificial sweetener Sucralose used in Celsius has been associated with potential health concerns, though more research is needed to fully understand its effects.

https://bestlifeonline.com/avoid-celsius-energy-drinks/?utm_source=chatgpt.com

https://neurolaunch.com/does-celsius-cause-anxiety/?utm_source=chatgpt.com

Answer 2

Before deciding if the claim "Celsius and other caffeinated drinks can lead to brain fog" I first looked at the provided article "Caffeine and Brain Fog" by Dylan Roche. The article suggests that many people look for the stimulant that caffeine gives us. Caffeine starts working in around 15 minutes and stays in your body for about 10 hours, which is one of the reasons it can negatively impact your sleeping patters causing you to lose an hour of sleep. When you continue to lose at least an hour of sleep each night, you end up becoming sleep deprived. No where in this article specifically suggests that caffeine causes brain fog, so I checked another source "5 Ways to Deal With Brain Fog, According to the Experts". The article says that there is no sole cause of brain fog, but it does say caffeine can contribute to the symptoms of brain fog, so you should try to cut back as much as you can. In conclusion I think this claim is exaggerated/misleading. I think this because the articles suggest that caffeine can contribute to brain fog, but it doesn't say caffeine specifically, causes brain fog.

Answer 3

This article is misleading as the main claim being "celcius" causes brain fog isn't what the article is outlining, instead it highlights the effects of caffeine and brain fog. There is a direct correlation with people who drink caffeine and brain fog due to the half-life of caffeine lasting up to 10 hours and impairing the sleep of most individuals. The lack of sleep is what causes the phenomenon of brain fog, characterized by a hazy and unclear state of mind that correlates with many other health issues. The cure to brain fog according to the Cleveland clinic is limiting the consumption of caffeine to more than 10 hours before going to sleep, therefore it is completely out of your system and doesn't affect your sleep. All in all, this claim is misleading as celcius isn't the cause of brain fog, drinking caffeine around or close to bedtime is the true root issue and what the article claims. 

Sources:

https://www.livestrong.com/article/440331-caffeine-brain-fog/

https://health.clevelandclinic.org/how-to-quit-caffeine

Answer 4

Short answer: yes
Long answer: no

Brain fog is associated with the symptoms of  "slow thinking, difficulty focusing, confusion, lack of concentration, forgetfulness, or a haziness in thought processes" (Ocon 2013). Many people may experience these symptoms on a daily basis. However for a case to be considered as Chronic Fatigue Syndrome (CFS), which is where the term "brain fog" derives from, a patient must experience fatigue for a minimum of 6 months and "at least four of the following symptoms must be concurrently present: pharyngeal pain, cervical or axillary lymphadenopathy, myalgia, polyarthritis without erythema or edema, headache, non-restful sleep, prolonged post-exercise fatigue, and/or debilitating cognitive impairments in short-term memory and concentration" (Fukuda et al., 1994). While many people will experience some of the symptoms of brain fog throughout their life, if brain fog is chronic and affects daily life then there is more going on than just purely caffeine consumption. 

Overconsumption of caffeine can lead to insomnia and migraines which are 2 out of 4 conditions required for CFS  (Saimaiti et al., 2022). Consuming up to 400 mg of caffeine per day has not found significant results in leading to a reason of overconsumption, however a time dependence for a consumption window at least 6 hours before sleeping was found (Saimaiti et al., 2022). 

The most common can of Celsius has 200mg of caffeine, and you would need to drink more than 2 full cans per day in order to be approaching levels of overconsumption. It's also important to note that consuming caffeine 6 hours before bed can cause non-restful sleep, which has its own implications. The claim that Celsius directly causes brain fog is misleading. The originally referenced article in claim also concluded that Celsius is still viable for the average person given they are already living a healthy life and have the added caffeine with their "budget" (Jamie N 2023).

Ocon, Anthony James. “Caught in the Thickness of Brain Fog: Exploring the Cognitive Symptoms of Chronic Fatigue Syndrome.” Frontiers in Physiology, vol. 4, Apr. 2013. Frontiers, https://doi.org/10.3389/fphys.2013.00063.

Fukuda, Keiji. “The Chronic Fatigue Syndrome: A Comprehensive Approach to Its Definition and Study.” Annals of Internal Medicine, vol. 121, no. 12, Dec. 1994, p. 953. DOI.org (Crossref), https://doi.org/10.7326/0003-4819-121-12-199412150-00009. 

Saimaiti, Adila, et al. “Dietary Sources, Health Benefits, and Risks of Caffeine.” Critical          Reviews in Food Science and Nutrition, vol. 63, no. 29, Nov. 2023, pp. 9648–66.             Taylor and Francis+NEJM, https://doi.org/10.1080/10408398.2022.2074362.

Dietitian, Jamie N., Registered. “Is Celsius Bad for You? The Truth from a Dietitian.” The Balanced Nutritionist, 9 Aug. 2023, https://thebalancednutritionist.com/is-celsius-bad-for-you/.

Answer 5

I find the article itself to be quite reputable as they cite other medical articles, providing a sense of security found in their words. However, I find the claim made in the article to differ from the claim previously made. The claim is that "Celesius and other caffeinated drinks can lead to brain fog and fatigue." Nowhere in the article is celsisus named, leading to this claim to be possibly more of an attention grab than a factual statement. Despite that, celsisus contains high amounts of caffeine, so the article's claim likely holds true to celsisus. However, because the article doesn't specify a kind of caffeinated drink, I find it misleading to mention celsisus in your main claim. However, despite all that, I agree with the article's claim. Specifically, consuming over 400 milligrams of caffeine can negatively affect an individual's sleep, leading to brain fog and fatigue occurring.

Answer 6

The claim that drinking Celsius energy drinks causes brain fog is unproven. While some people report experiencing brain fog after consuming caffeine, there is no conclusive scientific evidence specifically linking Celsius to brain fog.

According to the U.S. Food and Drug Administration (FDA), energy drinks contain high levels of caffeine, which can impact individuals differently. Some people may experience temporary side effects such as jitters, anxiety, or difficulty concentrating, especially if they consume too much caffeine. The FDA states, “Excessive caffeine intake can lead to nervousness, restlessness, and rapid heartbeat.” However, this is not specifically targeting Celsius, and does not mention brain fog as an effect.
https://www.fda.gov/food/food-additives-petitions/caffeine

A review from the National Library of Medicine suggests that while caffeine can enhance alertness in moderate doses, excessive consumption can lead to fatigue and impaired cognitive function in some individuals, which may be perceived as brain fog. Again, this effect is not exclusive to Celsius and depends on an individual’s sensitivity to caffeine.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3777290/

This claim is false because there is no solid scientific evidence proving that Celsius specifically causes brain fog. Excessive consumption of caffeine can have negative effects, but these effects depend on the individual and are not targeted to any specific drink. 

Answer 7

This article highlights how caffeinated drinks cause brain fog. The claim "Celsius causes brain fog" is true, but more appropriately the article discusses energy drinks as a whole. This is an exaggeration because different energy drinks have different properties in them, making them cause different reactions. However, there are more reliable and stronger websites to help support this claim. I decided to check out Livestrong's references, only 3/7 articles used, mention caffeine more than once. For this claim, I believe it should have had more niche research behind it since caffeine found in coffee and caffeine found in energy drinks is different. Energy drinks, like Celsius, have high amounts of caffeine and sugar, a combination that can negatively impact the human brain. In an article published by the National Institute of Health, caffeine can alter levels of dopamine, epinephrine, and norepinephrine. This can cause poor memory, which is a symptom of brain fog.

Source:

https://pmc.ncbi.nlm.nih.gov/articles/PMC8202818/#:~:text=The%20third%20mechanism%20of%20action,toxic%20to%20humans%20%5B8%5D.&text=To%20evaluate%20the%20effects%20of,is%20presented%20in%20Table%201.

Answer 8

While the poster claims that Celsius specifically is the cause of brain fog, the article that they cite never even mentions Celsius and instead covers caffeine more generally.  On top of that, while the article implies that caffeine is a common contributing factor, it lists sleep deprivation as the cause of brain fog and inappropriate caffeine consumption as an aid in poor sleep, hence the relationship, however not a direct cause.

The Center for Functional Health makes similar claims.  They released an article that relates poor sleep to high cortisol levels.  Consistently high cortisol levels result in not only stress but notably brain fog as well, in addition to other inhibitive conditions like heart disease, weight gain, and depression.

A study published in the Journal of Clinical Sleep found that "caffeine consumption even 6 hours before bedtime can have important disruptive effects on both objective and subjective measure of sleep".  This would further support the claim that while caffeine is not a direct cause of brain fog, it is an indirect factor due to the immediate impact it has on sleep performance.

https://pmc.ncbi.nlm.nih.gov/articles/PMC3805807/

https://thecenterforfunctionalhealth.com/blog/why-coffee-can-make-brain-fog-worse/

Answer 9

Celcius and other caffeinated drinks can lead to brain fog and fatigue. According to the National Library of Medicine, "Caffeine causes an increase in hippocampal acetylcholine. This may block consolidation by congesting replay of memories. A moderate dosage of caffeine impairs motor skill and may not be an adequate substitute for memory enhancements or daytime sleep (Mednick et al., 2008)." This study indicates that while caffeine temporarily reduces fatigue it may hurt perceptual memory and learning. Furthermore, caffeine intake can hinder sleep patterns which leads to poor sleep quality which can lead to brain fog and fatigue. So while the consumption of Celsius and other caffeinated drinks aren't directly giving people impairments like brain fog and fatigue those kinds of beverages are the issue and can lead to these cognitive problems.

Answer 10

In a research article done by Persad 2011, it was found that multiple studies had been done on caffeine and its various neurological affects. It was shown that consistent use of caffeine, 227mg a day, there were significant increases to a multitude of different neurological symptoms. This including an increased levels of stress, anxiety, and fatigue over long periods of time. Additionally there were also learning and memory deficits over long periods of time. While there was no direct tie to memory fog the fact that it affects learning and memory as well as stress, anxiety, and fatigue, which are tied to memory fog. This presents strong evidence that there could be a link between memory fog and caffeine that just hasn't been studied yet.

Article link: https://pmc.ncbi.nlm.nih.gov/articles/PMC3198027/