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

Celsius and other energy drinks have not proven to cause "brain fog." This is also very difficult to measure, because "brain fog" is not a definitive term, and there is no real way to diagnose this. The article you chose also does not mention Celsius specifically, but caffeine in general. There is no doubt that ingesting large amounts of caffeine can have adverse health effects. But in my research, I did not read anything regarding "brain fog."

https://health.clevelandclinic.org/are-energy-drinks-bad-for-you

This article discusses the negative health effects of very caffeinated energy drinks, like Red Bull, etc. These health impacts include anxiety, depression, diarrhea, headaches, nausea, stroke, high heart rate, etc. Nothing mentioning brain fog. This source is a very credible online health source.

The only sources I found saying that Celsius and other energy drinks cause "brain fog" was TikTok, Safari AI overview, and that is it. 

Answer 2

The caffeine and sugar within the Celsius energy drinks has been shown to decrease mental focus, cognitive performance, and the ability to process information. Along with that there is this idea that the use of caffeine might interrupt sleep schedules, causing a lack of sleep which then would lead to an increase of ‘brain fog’. This claim has truth in it, for the ingredients can affect cognitive and processing functions but, using Celsius in place of sleep is common which also increases brain fog which might make it difficult to differentiate what the root cause of one’s brain fog might be.  

https://neuropraxisrehab.com/how-energy-drinks-impact-brain-injury-recovery/#:~:text=The%20high%20caffeine%20content%20and,the%20ability%20to%20process%20information. 

https://www.vogue.com/article/how-to-deal-with-brain-fog#:~:text=%E2%80%9CCaffeine%20can%20aggravate%20the%20symptoms,It's%20a%20true%20vicious%20cycle.%E2%80%9D 

Answer 3

Though this article does touch base on how the ingestion of caffeine can cause negative effects on our health and possibly lead to brain fog, it mainly focuses on the effects of coffee, not necessarily energy drinks. Furthermore, there are various distinct ingredients in energy drinks, such as Celsius, compared to coffee. Along with that, there was no mention of the Celsius brand. Moreover, looking at other reliable websites, such as https://pmc.ncbi.nlm.nih.gov/articles/PMC10535526/, can help narrow down the actual effects of drinking Celsius.

Answer 4

The claim that Celsius’ and other energy drinks cause brain fog is misleading. The reference site linked is not a reliable or credited source for health and wellbeing. It has multiple articles claiming various things that can either drastically “help” or “hinder” further health improvements. This article feeds off of clicks from concerned persons and it helps serve as a conduit for bias confirmation rather than truthful remarks.

Answer 5

This claim can sometimes be very accurate. Caffeine has been linked to brain fog thoroughly because when you ingest caffeine it typically takes a long time to leave your system. This process can take up to 10 hours resulting in interrupted sleep patterns if ingested late enough in the day. This, therein, can easily turn to sleep deprivation which causes immense brain fog. I am placing this claim in the exaggerated category because although there are links from caffeine to brain fog, there usually has to be some outside factors going on to fully create the phenomenon.

Answer 6

In the article provided, it states the pros and cons of the consumption of energy drinks. As we all know energy drinks when consumed it gives us a burst of energy throughout your day when taken reasonably. They list many health risks when drinking an energy drink on a constant daily basis like, anxiety, depression, hallucinations, headaches, stroke and rapid heart rate. They also state "“But when you consume excessive amounts and combine this with the stimulant effect of the additional ingredients, like guarana, it can amplify the psychological and neurological effects. It may also have cardiovascular effects, like an increased heart rate and blood pressure, and may even lead to stroke.” These indicate that different ingredients that are commonly used inside drinks causing this health risks. They add "healthy alternatives to energy drinks" like coconut water, black tea, kombucha, and green tea. 

I felt that the article provided in the claim was misleading with the article title. I found information of lack of sleep and deprivation. And although caffeine isn't one of the MAIN sources out there for causing brain fog and fatigue, they do state that isn't the actual cause of the reason claimed.  

https://health.clevelandclinic.org/are-energy-drinks-bad-for-you

Answer 7

Based on research, the article contains some accurate claims but also some misleading statements. Caffeine can contribute to cognitive impairment when it disrupts sleep, the idea that caffeine directly causes brain fog is not strongly supported by research. The claim that caffeine stays in the body for 10 hours is mostly true, though it varies. Research do confirm that consuming caffeine six hours before bedtime can reduce sleep duration, but the impact on brain fog and CFS is unclear. Lastly, the recommendation to limit caffeine intake to 600 mg per day aligns with health guidelines.

https://www.sleepfoundation.org/nutrition/caffeine-and-sleep

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

Answer 8

Celsius causes brain fog - News Detective

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

In this article, the author claims that Celsius and other caffeinated drinks are responsible for brain fog and fatigue. The author goes on to explain that taking a substantial amount of caffeine “six hours before bedtime” can lead to restless nights, and several nights in a row will lead to sleep deprivation and brain fog. 

 If someone is continuously drinking these energy drinks day to day they will develop brain fog from sleep deprivation. There are other variables to take into account that would cause sleep deprivation, and brain fog such as chronic stress, or anxiety. In conclusion, high caffeinated drinks can cause brain fog but there are also outlying variables that can as well. 

Here is an article that correlates brain fog to other sources rather than only caffeine

"Mental health conditions like anxiety or depression.”Brain Fog: What It Is, Causes, Symptoms & Treatment

Answer 9

According to the National Institute of Health caffeine and energy drinks give the complete opposite effect of brain fog and mental fatigue. Caffeine can also heighten someone's mood and lower depression. Other positive benefits are alertness and one can have better attention. Although, this is about caffeine I could not find a reliable and scholarly source to disprove or agree with claim but my source discussed energy drinks and other caffeinated beverages. 

sources: https://pubmed.ncbi.nlm.nih.gov/26677204/#:~:text=In%20addition%2C%20caffeine%20has%20many,but%20only%20in%20sensitive%20individuals.

Answer 10

The claim that "Celsius causes brain fog" is misleading because caffeine isn't the leading cause of brain fog. Brain fog is hard to diagnose because it is not a medical condition, and the causes of it can vary for each person. However, caffeine can contribute to not getting adequate sleep, which can turn into brain fog. There is some truth to the statement that caffeine causes brain fog. The article I found "7 reasons why you are having brain fog," said that caffeine can be a contributing factor. The article said that "consuming too much caffeine leads to inadequate sleeping patterns."

https://norwestchiro.co.nz/7-reasons-why-you-are-having-a-brain-fog