What is neurohacking? Origins, meaning and what the science says

Neurohacking is the do-it-yourself pursuit of a better-performing brain [1]. In a 2017 analysis, the neurohacking movement "is comprised of individuals attempting to optimize their brains to achieve enhanced performance" [1]. The same analysis describes neurohacking as an offshoot of the life hacking, or quantified self, movement, in which people self-track small details of their daily lives to improve productivity or performance [1].

The toolkit is broad. Wexler traces the movement through brain-training games, drugs and supplements sold as nootropics, consumer EEG devices and home brain stimulation [1]. Compared with other neurohacking techniques, home brain stimulation is only a small part of the movement [1]. Some go further: a 2023 interview study of 13 neurohacking pioneers describes a community of hackers who experiment with neurotechnology on themselves and build new applications [3]. Eight of those 13 defined a true cyborg connection as technology integrated into the body, breaking the skin barrier [3].

So "neurohacker" can describe very different people: someone tracking how coffee timing affects their sleep, someone wearing a store-bought stimulation headset, or someone with an implanted device. Wexler identifies self-improvement as the primary goal of home brain-stimulation users, and self-experimentation as common among self-trackers [1].

Neurohacking versus biohacking

The two words overlap but are not the same. Biohacking has been described as do-it-yourself citizen science merging body modification with technology [2]. Wexler compares home brain stimulation with the DIY biology, or biohacking, movement, which seeks to democratize tools of scientific experimentation [1]. Despite the parallels, the goals differ: home users of brain stimulation mainly want self-improvement, while the goal of DIY biology is more political in nature [1].

We found no peer-reviewed source that dates the first use of the word "neurohacking" (PubMed search for neurohack* in titles and abstracts, 6 results, November 11, 2026). The ideas behind it have a clearer history.

The word "nootropic." The term nootropics was coined in 1972 [5]. Websites and forums later grew up around nootropics, a word used to describe smart drugs and dietary supplements said to improve intelligence or cognitive ability [1]. Our guide to what nootropics are covers the term in detail.

The brain as something to train. Wexler links the rise of neurohacking to neuroscience entering popular culture in the early 2000s, when the concept of plasticity was co-opted into a mantra for personal growth [1]. Wexler cites a study of brain-related articles in six UK newspapers between 2000 and 2010 that found 43% described the brain as a "resource to be optimized" [1]. Companies such as Lumosity, PositScience and CogniFit began selling brain-training software games, and the Federal Trade Commission later took action against several companies for misleading marketing claims [1].

Consumer neurotechnology. Companies also began making pared-down versions of neuroscience tools, such as EEG devices, and marketing them directly to consumers [1]. The do-it-yourself brain stimulation movement began in earnest in late 2011, when lay people started building stimulation devices and applying low levels of electricity to their heads for self-improvement [1]. Writing in 2017, Wexler reported that the Reddit forum on nootropics had 10 times as many subscribers as its tDCS (transcranial direct current stimulation) counterpart, and that dozens, if not hundreds, of companies sold nootropics compared with roughly a dozen consumer tDCS companies [1].

Implants and speculative tech. A 2019 overview catalogued experimental implementations of neurotechnology by neurohackers, speculative designers and artists [4]. The authors of the 2023 interview study describe these neurotechnologies as, for now, risky technologies with medical, technological, legal, economic and ethical challenges [3].

Neurohacking is a set of methods rather than a single method, so the useful question is what controlled studies found for each method, compared with a placebo or an active control.

Start with the basics

Sleep. A meta-analysis of 70 articles containing 147 cognitive tests measured the effects of short-term total sleep deprivation (under 48 hours) on simple attention, complex attention, working memory, processing speed, short-term memory and reasoning [6]. Effects ranged from small and nonsignificant for reasoning accuracy (g = -0.125) to large for lapses in simple attention (g = -0.776) [6].

Exercise. A meta-review of 30 systematic reviews with meta-analyses, covering 383 studies and 18,347 participants, found that a single bout of exercise improved cognitive function with a small-to-medium effect (mean SMD = 0.33), including on attention tasks (mean SMD = 0.37) [7]. The effect did not differ significantly by age, cognitive status or the intensity, type and duration of exercise, but it did vary with the timing of testing relative to exercise [7]. A review of non-drug approaches describes exercise and cognitive, mental and social stimulation as forms of environmental enrichment, noting that they are low in cost, available to the general population and low in risk [22].

Caffeine. not graded yet not graded yet

A 2025 meta-analysis of 31 randomized, double-blind, placebo-controlled trials in 1,455 rested healthy adults found that caffeine acutely improved both accuracy (g = 0.27) and reaction time (g = 0.28) on attention tests [8]. Higher doses kept improving reaction time, but accuracy improved only up to a point before declining [8]. In that analysis, the effect did not vary with habitual caffeine intake or task complexity [8]. The trade-off is sleep: in a placebo-controlled home study of healthy normal sleepers, 400 mg of caffeine taken 6 hours before bed still had important disruptive effects on sleep [9]. These are study findings, not advice about how much to take. The caffeine monograph covers doses used in studies, safety, interactions and the debate over whether regular users mainly gain relief from withdrawal.

Brain-training games

According to Wexler, the rise of brain training helped set the foundation for later consumer neurohacking products such as home brain stimulation [1]. In 2014, two groups of scientists published open letters that reached opposite conclusions about whether it works [10]. A 2016 review then examined the published intervention studies cited by leading brain-training companies and found extensive evidence that training improves performance on the trained tasks, less evidence for closely related tasks, and little evidence for distantly related tasks or everyday cognitive performance [10]. Many of those studies had major shortcomings in design or analysis that preclude definitive conclusions [10].

Meta-analyses point the same way. One pooled 87 publications with 145 comparisons of working memory training: there were reliable short-term gains on working memory measures, but no convincing evidence of improvement on far-transfer measures such as nonverbal ability, reading comprehension or arithmetic when training was compared with an active control [11]. The authors concluded that the programs produce short-term, specific training effects that do not generalize to "real-world" cognitive skills [11].

A meta-analysis of 43 studies (2,636 participants) of seven commercial programs, including Lumosity, CogMed and BrainHQ, in healthy older adults and older adults with mild cognitive impairment found small, significant near-transfer effects in both groups; after adjusting for publication bias, only the effect on processing speed remained significant in healthy older adults [12]. The authors concluded there is currently insufficient evidence that such training can improve memory, general cognition or everyday functioning [12].

Home brain stimulation

Transcranial direct current stimulation (tDCS), the method at the center of the DIY brain stimulation movement, involves applying low levels of electricity to the head [1]. The controlled evidence for cognitive benefits in healthy people is weak. A quantitative review of single-session tDCS in healthy adults aged 18-50 ran 59 analyses across executive function, language, memory and other measures and found no significant effect in any of them [13]. A meta-analysis of 31 articles on working memory in healthy people found, in its primary analyses, a small but significant effect when left prefrontal stimulation was paired with working memory training; stimulation alone lost significance after correction for publication bias, and no other primary effect was significant [14].

An expert review, whose listed funders include Janssen, Takeda and CorTec alongside public bodies, notes that there is no area of brain stimulation research in which only positive outcomes have been reported [17].

On safety, a 2016 review of human trials reported no serious adverse effects or irreversible injury across over 33,200 sessions with conventional tDCS protocols [15]. A 2026 guideline update reported no serious adverse events across over 300,000 sessions of low-intensity electrical stimulation involving healthy individuals and clinical populations, and found mild effects such as tingling or burning sensations, headaches and fatigue to be common, with similar mild effects reported after placebo stimulation [16]. The guideline's competing-interest statement lists paid consulting and advisory roles with stimulation-device companies [16]. Those figures come from supervised studies using tested protocols. A 2022 expert review of brain stimulation for enhancement says that devices and protocols that go beyond the settings examined in published studies cannot claim to be "safe" [17], and that consumer devices that make no medical claims are not necessarily regulated to the same level as medical devices [17]. Home users have reported tingling, headache, dizziness and skin redness as common side effects, with occasional mentions of skin burns [1]. Anyone considering brain stimulation should talk to a clinician first.

Neurofeedback

In neurofeedback, people get feedback on their own brain activity and try to learn to change it [18][19]. A systematic review of EEG neurofeedback for executive function in healthy adults which had too few studies to pool statistically, described the evidence as promising but said more rigorous studies are needed to overcome the methodological weaknesses it found [18]. A broader 2023 systematic review of neurofeedback and laboratory tasks found that only a minority of studies reported statistically meaningful effects on performance, and concluded that the evidence does not support strong effects [19].

Supplements and "smart drugs"

In 2017, far more companies sold nootropics than sold consumer brain stimulators [1]. Results differ by compound and by outcome, so we grade each compound per outcome instead of judging supplements as a group; see do nootropics work and the focus and memory hubs for graded options. Two broad findings frame the field. A Cochrane review of 28 randomized trials with more than 83,000 participants did not find evidence that any vitamin or mineral supplementation strategy for cognitively healthy adults in mid or late life has a meaningful effect on long-term cognitive outcomes, although the evidence does not permit definitive conclusions [20]. For B vitamins, in trials where most participants were over 60 and had a history of cardio- or cerebrovascular disease, it found probably little or no effect on global cognitive function up to 5 years [20].

For the stimulants and other drugs that some healthy students and workers use as "smart drugs", a 2022 review found that users generally perceive them as effective, with enthusiastic anecdotal reports, but that their efficacy in healthy individuals is uncertain and any reported improvement temporary [21]. Because most of these drugs are stimulants, the review notes they may lead to cardiovascular, neurological and psychopathological complications [21]. In the US, FDA does not have the authority to approve dietary supplements before they are marketed [23].

Self-experimentation is common among self-trackers, who often test their own hypotheses, for example whether late coffee keeps them awake, and plot the results [1]. Wexler notes that they face the same problem as home users of brain stimulation, the methodological limits of a sample size of one [1]. Brain stimulation researchers stress that placebo and nocebo effects have to be taken into account [17]. That is why the evidence section relies mainly on controlled studies and pooled analyses rather than individual reports.

• Brain-training games for everyday thinking. Gains stay mostly on the trained tasks, with little evidence for distant tasks or everyday performance [10][11].
• tDCS for thinking in healthy adults. No significant effect in 59 analyses of single-session studies [13]; working memory effects of stimulation alone did not survive correction for publication bias [14].
• Neurofeedback for lab-measured performance. Only a minority of studies found meaningful effects [19].
• Vitamin and mineral supplements in healthy adults in mid or late life. A Cochrane review found no evidence of a meaningful effect, though the evidence does not permit definitive conclusions [20].
• Stimulants and other "smart drugs" in healthy people. Efficacy uncertain and any reported improvement temporary, according to a 2022 review [21].

Grades on this page are pulled live from our evidence matrix and are set per compound and per outcome. Our page on how we grade evidence explains the rubric, the safety flag and how industry funding is labeled.

The word is also a company name. In 2019, the neurohacker.com site sold Qualia Mind, Qualia Mind Caffeine Free and Qualia Focus under a Neurohacker Collective, LLC copyright line, and it hosted a "Guide to Neurohacking" [25]. That site described its team as scientists, medical practitioners, biohackers and health-conscious creators [25]. Today the products are sold by Qualia Life Sciences LLC, whose terms say card charges may read "Qualia or NeuroHacker" [24], and the company says it was founded in 2015 [26]. These are company statements, not independent sources.

We earn a commission on Qualia sales; read how we make money. Commissions never change a grade.

No study cited on this page tested this product. The module below compares its label doses with the doses used in studies.

What is a neurohacker?

In the research literature, a neurohacker is someone attempting to optimize their own brain to achieve enhanced performance, using tools such as brain-training games, supplements, consumer EEG devices or home brain stimulation [1]. Some go further and experiment with neurotechnology on themselves; in one interview study of 13 such pioneers, 8 defined a true cyborg connection as technology integrated into the body, breaking the skin barrier [3].

Is neurohacking the same as biohacking?

They overlap but are not the same. Biohacking has been described as do-it-yourself citizen science merging body modification with technology [2]. One analysis found that home users of brain stimulation mainly want self-improvement, while the goal of DIY biology is more political in nature [1].

Do brain-training games make you smarter?

A meta-analysis of 87 publications on working memory training found reliable short-term gains on working memory measures but no convincing evidence of far transfer to measures such as nonverbal ability, reading comprehension or arithmetic when training was compared with an active control [11]. A meta-analysis of 7 commercial programs in healthy older adults and older adults with mild cognitive impairment found that only the processing speed effect remained significant after adjusting for publication bias [12].

Is home brain stimulation safe?

A safety review found no reports of serious adverse effects or irreversible injury across over 33,200 sessions of conventional tDCS protocols in research trials [15]. Those figures come from supervised studies using tested settings; an expert review says devices and settings beyond those examined in published studies cannot claim to be safe, and consumer devices are not necessarily regulated like medical devices [17]. Home users have reported tingling, headache, dizziness and skin redness as common side effects, with occasional mentions of skin burns [1]. Anyone considering it should talk to a clinician first.

Who makes Qualia, and how is it linked to Neurohacker Collective?

In 2019, the neurohacker.com site sold Qualia Mind under a Neurohacker Collective, LLC copyright line [25]. Today the products are sold by Qualia Life Sciences LLC, whose terms say card charges may read Qualia or NeuroHacker [24]. These are the company's own statements. We earn a commission on Qualia sales.