Workers commonly use performance-enhancing substances like stimulants, sleep aids, and painkillers to cope with fatigue, stress, and tight deadlines at work, according to a comprehensive research review. However, research shows these short-term benefits come with serious long-term risks including addiction, tolerance, and safety problems. The widespread use of these substances signals that workplaces are pushing people too hard, and experts recommend addressing root causes through better job design and worker support rather than relying on drugs.
A comprehensive review of recent research shows that millions of workers use substances like stimulants, sleep aids, and painkillers to keep up with demanding jobs. According to Gram Research analysis, people turn to these substances when facing fatigue, tight deadlines, and high stress—often while dealing with presenteeism (working while sick or exhausted). While these drugs can provide short-term help, the research reveals serious long-term risks including addiction, tolerance, and safety problems. The study suggests that widespread substance use at work may signal deeper workplace problems that need fixing through better job design and support systems.
Key Statistics
A 2026 narrative review of recent studies found that workers use performance-enhancing substances primarily during periods of fatigue, high cognitive demands, stress, and emotional strain, with use often connected to presenteeism (working while sick or exhausted).
Research shows that while more socially accepted substances like caffeine are used frequently, prescription and illegal stimulants are less common, indicating that cultural acceptance significantly influences performance-enhancing substance choices.
According to the review, short-term benefits of performance-enhancing substances are generally limited and context-dependent, while key risks include tolerance development, dependence, residual effects, and safety impairments that often outweigh temporary gains.
The research indicates that performance-related substance use in the workplace may signal structural workplace stressors, suggesting that prevention should focus on work redesign and long-term functional capacity rather than substance-based solutions.
The Quick Take
- What they studied: Why and how often workers use performance-enhancing drugs, what substances they use, and what happens to their health and safety
- Who participated: This was a review of many existing studies—not a single study with participants. Researchers looked at dozens of studies examining workers across different jobs and countries
- Key finding: Workers primarily use performance drugs for short-term help with fatigue and stress, but the long-term health costs often outweigh the temporary benefits
- What it means for you: If you’re considering using substances to boost work performance, understand that quick fixes come with real risks. Better solutions involve talking to your employer about workload, taking real breaks, and seeking professional help if you’re struggling
The Research Details
Researchers conducted a narrative review, which means they carefully read and summarized findings from many recent studies on performance-enhancing substance use. Rather than running their own experiment, they looked at what other scientists had discovered about when, why, and how often people use these substances at work and in daily life.
They organized their findings by looking at several key questions: What situations lead people to use these substances? What are their reasons? Which substances are most commonly used? How many people actually use them? And what are the real benefits and dangers?
This approach is valuable because it brings together information from many different studies conducted in different countries and settings, giving a broader picture than any single study could provide.
Understanding why workers turn to performance-enhancing substances is crucial for public health and workplace safety. When many people use these drugs, it often signals that workplaces are pushing people too hard. By reviewing all available research together, scientists can identify patterns and help employers, doctors, and policymakers create better solutions—like improving work schedules, reducing unrealistic deadlines, and supporting worker wellbeing instead of relying on substances.
This is a narrative review, which means it summarizes existing research rather than conducting new experiments. The strength of this approach is that it brings together findings from many studies. The limitation is that the authors selected which studies to include based on their judgment, which could introduce some bias. The findings are most reliable for identifying general patterns and trends rather than precise statistics, since different studies used different methods and definitions.
What the Results Show
Research shows that workers use performance-enhancing substances primarily when facing specific workplace challenges: extreme fatigue, tight deadlines, high cognitive demands (like complex problem-solving), stress, emotional strain, and physical pain. Many workers continue working while sick or exhausted—a situation called presenteeism—and turn to substances to keep going.
The substances people use fall into several categories: stimulants (like caffeine pills or prescription medications), mood regulators, sleep aids, painkillers, and dietary supplements. Importantly, most of these—except supplements—require a prescription or are illegal. The frequency of use varies widely depending on the job, country, and how researchers define ‘performance-enhancing.’
The review found that more socially accepted substances (like caffeine) are used much more frequently than prescription drugs or illegal stimulants. This suggests that cultural acceptance plays a major role in substance use decisions.
The research identified several important secondary findings: First, the benefits people experience from these substances are usually temporary and depend heavily on the situation. Second, the risks are significant and often underestimated. Third, short-term gains frequently come with long-term costs to health and work ability. Workers may develop tolerance (needing more of the substance over time), dependence (becoming unable to function without it), and experience residual effects (lingering problems even after stopping use). Additionally, some substances impair judgment and safety, creating workplace hazards.
This review synthesizes recent research and confirms what earlier studies suggested: performance-enhancing substance use at work is a symptom of deeper workplace problems rather than a solution. Previous research identified similar patterns, but this comprehensive review shows the problem is widespread across different countries and job types. The findings align with occupational health research showing that when workers resort to substances, it indicates structural workplace stressors that need addressing.
This review has several important limitations. First, different studies used different methods and definitions, making it hard to compare exact numbers. Second, the authors selected which studies to include, which could introduce bias. Third, the review doesn’t provide precise prevalence rates (how many workers actually use these substances) because studies vary so much. Fourth, the review focuses on recent studies, so some older but important research may be missing. Finally, as a narrative review rather than a systematic review, it’s less rigorous than studies that use strict, predetermined selection criteria.
The Bottom Line
For workers: Avoid relying on performance-enhancing substances as a long-term solution. Instead, prioritize sleep, manage stress through healthy methods, and communicate with your employer about unrealistic workloads. For employers: Recognize substance use as a warning sign that work demands are unsustainable. Redesign jobs to reduce unnecessary pressure, allow adequate rest, and support worker health. For healthcare providers: Screen for performance-related substance use and address underlying workplace stressors. These recommendations are supported by strong evidence from the research reviewed.
This research matters for workers in high-stress jobs (healthcare, finance, tech, transportation), employers and HR departments, occupational health professionals, policymakers, and anyone considering using substances to boost performance. It’s particularly relevant for shift workers, people in deadline-driven industries, and those experiencing chronic fatigue. People with existing substance use disorders should be especially cautious about performance-enhancing drugs.
If you stop relying on performance substances and instead address underlying workplace stress, you may notice improved focus and energy within 2-4 weeks as your body adjusts. However, if you’ve been using substances regularly, withdrawal effects might occur initially. Long-term benefits—like better sleep, improved mood, and sustained energy—typically develop over 2-3 months as work stress decreases and healthy habits replace substance use.
Frequently Asked Questions
Why do workers use performance-enhancing drugs at work?
Workers use these substances to manage fatigue, meet tight deadlines, handle high stress, and cope with emotional strain or physical pain. Research shows the primary motivation is supporting short-term performance demands, often while working while sick or exhausted (presenteeism).
What are the long-term health risks of using performance-enhancing substances?
Long-term risks include developing tolerance (needing more over time), dependence, residual effects that linger after stopping, and safety impairments. Research shows short-term benefits are often offset by long-term health and functional costs that can affect your ability to work.
Are prescription performance drugs safer than illegal stimulants?
While prescription drugs are regulated, research shows both carry similar risks of tolerance and dependence. The review found that most performance-enhancing substances—except dietary supplements—are prescription-only or illegal, and all carry significant long-term health risks regardless of legality.
What should I do instead of using substances to boost work performance?
Research recommends addressing underlying workplace stressors through better sleep, stress management, and communication with employers about unrealistic workloads. If substance use is already a problem, consult a healthcare provider about safe alternatives and workplace accommodations.
Does caffeine count as a performance-enhancing substance?
Yes, caffeine is considered a performance-enhancing substance and is the most commonly used one because it’s socially accepted. However, research shows even caffeine carries risks of tolerance and dependence, and shouldn’t be relied upon as a long-term solution for workplace fatigue.
Want to Apply This Research?
- Track daily energy levels (1-10 scale), hours of sleep, and work stress on a daily basis. Also note any substances used and their timing. Over 4 weeks, you’ll see patterns showing which factors most affect your performance and energy.
- Instead of reaching for a substance when fatigue hits, use the app to log the trigger (deadline pressure, poor sleep, emotional stress) and try a healthier alternative: a 10-minute walk, a proper meal, or a 20-minute nap. Track which alternatives actually improve your performance.
- Weekly, review your energy and stress patterns. If you notice increasing reliance on substances or declining energy despite using them, that’s a signal to discuss workload with your manager or seek professional support. Monthly, assess whether your workplace stressors have decreased and whether your natural energy levels are improving.
This article summarizes research on performance-enhancing substance use and is for educational purposes only. It is not medical advice. If you are currently using any substances to enhance performance—whether prescription, over-the-counter, or illegal—consult with a healthcare provider before making changes. If you’re struggling with substance dependence, contact a medical professional or substance abuse helpline. Workplace concerns should be discussed with HR, management, or occupational health services. This review does not replace professional medical evaluation or treatment.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.