Substance use among college students varies by substance, age, campus, and survey. Use does not automatically mean a substance use disorder: diagnosis depends on a pattern of impaired control and other problems. Alcohol and other drugs can nevertheless affect health, safety, relationships, and study, including during a single episode of use.
Alcohol and substance abuse in college students can have far-reaching effects, including disruption of academic performance and decreased employment prospects after graduation.
According to the National Institute on Alcohol Abuse and Alcoholism (NIAAA), college students regularly use and abuse alcohol, with many students considering alcohol consumption as a milestone event. Nevertheless, many students arrive on campus with established drinking habits.
Substances and patterns of use relevant to student health include:
Cannabis: Cannabis can impair attention, memory, coordination, and driving. Frequent use can lead to cannabis use disorder; risks vary with THC strength, frequency, and individual vulnerability.
Hallucinogens and MDMA: These substances have different effects and risks. Anxiety, confusion, and unsafe behavior can occur; MDMA can cause dangerous overheating and other medical emergencies.
Microdosing: Taking small amounts of a psychedelic does not establish that it is safe or an effective treatment for concentration, mood, or academic performance. Potency and contents may be uncertain.
Prescription stimulants: Adderall contains mixed amphetamine salts; Ritalin contains methylphenidate. When prescribed, these medicines can help conditions such as ADHD. Taking someone else’s medication or more than prescribed carries risks including cardiovascular problems, overdose, and addiction.
Cocaine: Cocaine can cause seizures, dangerous heart rhythms, heart attack, or stroke. Serious toxicity can occur without a previous history of regular use.
Opioids: Prescription opioid misuse and illicit opioids can cause fatal respiratory depression. Pills obtained outside a regulated pharmacy may contain unexpected fentanyl. Mixing opioids with alcohol or sedatives increases danger.
Substance use and mental health problems can occur together. Their relationship can involve shared risk factors, attempts to cope with distress, and effects of substances on symptoms. It cannot be reduced to a single cause.
The National Institute of Mental Health recommends assessment and coordinated treatment when a substance use disorder and another mental disorder occur together.
Prevalence estimates must specify the population, year, diagnostic definition, and time period. A figure for any use cannot be treated as the rate of addiction or applied to every campus.
Symptoms associated with mental health disorders might be exacerbated or triggered by drug and alcohol use. And when taken with prescriptions such as antidepressants, anti-anxiety medications, and mood stabilizers, substance abuse and alcohol consumption can make it more difficult to relieve symptoms.
Understanding College Drug Use Statistics
National surveys measure different populations and periods. To interpret a college drug-use estimate accurately, check the following details:
- Who was surveyed: Full-time college students, all young adults, and secondary-school students are different groups.
- Which time period: Lifetime, past-year, and past-month use cannot be compared as though they measure the same outcome.
- Which outcome: Use, nonmedical use, dependence, and substance use disorder are not interchangeable.
- Which substance: A category such as hallucinogens or prescription sedatives may include several drugs.
- Which survey year: Historical estimates should not be presented as current rates.
Whether methods changed: Changes in questionnaires, sampling, or data collection may limit trend comparisons. See the Monitoring the Future annual reports for their population definitions and methods.
College Students Alcohol Abuse Statistics
- In the 2024 US National Survey on Drug Use and Health, 46.6% of full-time college students ages 18–25 reported drinking alcohol in the previous month.
- In the same group and survey, 25.0% reported past-month binge drinking.
- In the same group and survey, 5.0% reported past-month heavy drinking, defined in that survey as binge drinking on at least five days in the preceding month.
- NIAAA describes binge drinking as a pattern that raises blood alcohol concentration to 0.08% or more, typically about five US standard drinks for a man or four for a woman in around two hours. This is a research definition, not a safe limit; smaller amounts can cause impairment and harm.
- These estimates come from NIAAA’s summary of the 2024 NSDUH. They concern a defined US population and should not be generalized to students worldwide.
- Alcohol can impair judgment and the ability to give consent. Sexual assault can occur with or without substance use, and responsibility always lies with the person committing the assault.
- Someone who has experienced assault deserves safety, confidential support, and access to medical care, regardless of whether they drank or used drugs.
- Alcohol can contribute to poisoning, injuries, violence, and long-term illness. Do not wait for a statistical threshold before seeking help for harmful drinking.
Alcohol-related risky behaviors can result in negative outcomes including:
Injury and death: Alcohol can contribute to falls, road crashes, poisoning, and other potentially fatal injuries.
Assault: Students may be harmed by another person’s drinking, including through physical violence.
Sexual assault: Intoxication can increase vulnerability and prevent consent; it never excuses an assault or makes the survivor responsible.
Academic difficulties: Drinking may contribute to missed classes, poorer concentration, incomplete work, and lower performance.
Cannabis Use and College Health
- Cannabis use estimates vary across survey years, age groups, and measures. Past-year use should not be confused with daily use or a cannabis use disorder.
- Cannabis can impair learning, memory, and attention, which may interfere with study.
- Frequent or high-THC use can increase the risk of dependence and other adverse effects.
- Some people develop withdrawal symptoms after stopping frequent use, including sleep difficulty, irritability, and anxiety.
- Avoid driving while impaired or combining cannabis with alcohol. Seek assessment if use is causing problems or feels difficult to control.
Vaping and Cigarette Use in College Students
- Vaping surveys should distinguish nicotine vaping from cannabis vaping; the risks and prevalence measures differ.
- Nicotine-containing products can cause dependence, including in people who do not smoke cigarettes.
- Cigarette smoking and nicotine vaping are different measures and should not be combined into a single prevalence claim.
- Youth and college-age nicotine trends change over time. A historical percentage increase should always identify the years and the specific measure.
Students who want to stop smoking or vaping can seek behavioral support and advice about appropriate treatment.
Prescription Stimulant Misuse in College Students
Prescription stimulant treatment under medical supervision is different from using medication without a prescription or in a way it was not prescribed.
A belief that a stimulant will improve studying does not establish a benefit. Taking extra doses, sharing medication, or combining it with other substances can cause harm.
Students use substances for varied reasons, and many do not use them. Risk factors can overlap; no single personality type, social group, or mental health condition explains all substance use.
Factors that may contribute include:
1. Peer influence
Peers and social settings can influence substance use. A student may feel pressure to join in, but supportive friendships and alcohol-free activities can also help protect health.
2. Social phobia or anxiety
Some students use alcohol or drugs to cope with anxiety, although this can worsen symptoms and create other risks. Introversion itself is not an anxiety disorder. Persistent anxiety deserves an assessment and appropriate support.
3. Greek life
Some research associates fraternity and sorority settings with higher levels of drinking, but experiences vary. Membership does not establish a substance use disorder or determine an individual’s future.
4. Curiosity
Commonly, college students try alcohol and drugs out of curiosity. Students are more inclined to try new activities when living independently and away from home for the first time. In conjunction with peer pressure, this might cause many students to experiment with alcohol and drugs to see how they feel or to try something different.
5. Academic pressure and stimulant misuse
6. Overcoming mental health problems
Mental health symptoms and substance use can influence each other and share risk factors. Using substances to manage distress may delay effective care or make symptoms worse.
A campus health service, primary care clinician, or qualified mental health professional can help assess the problem and plan appropriate care. Residential treatment is one possible setting, not a requirement for every student.
Stigma, cost, practical barriers, or uncertainty about the problem may delay help. A confidential assessment can be useful even before a student is sure whether their substance use amounts to a disorder.
Early help can reduce harm and support recovery. Treatment and academic arrangements should be discussed individually; some students can continue studies, while others need adjustments or a period of leave.
Withdrawal care can reduce risks and relieve symptoms when it is needed. It is only one part of treatment and does not guarantee that all symptoms or future substance use will be prevented.
Abrupt withdrawal from regular alcohol, benzodiazepine, or barbiturate use can be life-threatening. Ask a clinician about a safe plan before stopping. Withdrawal course varies by substance, pattern of use, and health:
- Alcohol: Acute symptoms may develop within hours of reduction and complications can emerge over subsequent days. Seizures, hallucinations, or confusion require emergency care.
- Cannabis: Symptoms often begin in the first few days and may continue for several weeks, particularly sleep disturbance after frequent use.
- Cocaine: Fatigue, low mood, sleep changes, and cravings may persist beyond an initial crash. Severe depression or suicidal thoughts need urgent assessment.
- Nicotine: Symptoms are often strongest early after stopping, but cravings and other difficulties may last longer than the first few weeks.
- Benzodiazepines: A clinician-guided gradual taper may take months or longer. Abrupt stopping can cause seizures, and a fixed 10–14-day schedule is not suitable for everyone.
- Opioids: Timing depends on the drug and treatment. Vomiting and diarrhea can cause dehydration. Ongoing medication treatment is often more appropriate than detoxification alone.
Opioid tolerance decreases after a period of reduced use or abstinence. Returning to a previously used amount can cause fatal overdose. Naloxone access and continuing treatment are important risk-reduction measures.
Methadone or buprenorphine treatment can reduce opioid use, overdose risk, and death; naltrexone is another option for selected patients after appropriate assessment. Treatment duration should reflect individual benefit and need, without an arbitrary deadline for stopping. If someone is unresponsive or breathing slowly, call emergency services, give naloxone if available, and follow dispatcher instructions.
People experience recovery differently. Continuing support should address cravings, health, housing, relationships, and practical difficulties as well as withdrawal.
Behavioral Treatment
Psychological treatment can help students develop coping skills and address triggers. Medication and practical support may also be needed; effective treatment can be offered in several settings.
When another mental health condition is present, coordinated care can address it alongside substance use. A co-occurring diagnosis should be assessed rather than assumed.
Common co-occurring disorders encountered by students include:
- Eating disorders.
- Depressive disorders.
- Bipolar disorder.
- Anxiety.
Campus counseling and health services can provide care or referrals, depending on local availability. Ask about confidentiality, costs, and limits of the service. Community and specialist services can also help.
Outpatient Rehab Vs. Inpatient Rehab
The appropriate setting depends on medical and psychiatric risk, withdrawal needs, available support, and personal circumstances. Many students can receive effective outpatient treatment; others require residential or hospital care.
Hospital or residential care can provide closer support when clinically indicated. Attendance at classes during treatment is not always possible; academic accommodations should be planned with consent.
Outpatient care can include medication, psychological treatment, monitoring, and recovery support. It is not limited to mild problems, but it must provide enough safety and support for the individual. In the US, call or text 988 for a suicidal crisis and call 911 for an immediate medical emergency; elsewhere use local emergency or crisis services.
