Why do Some People Get Addicted and Others Don’t? Understanding Risk Factors for Addiction

Plenty of people experiment with substances, from alcohol to marijuana and even cocaine. While some people can use drugs and alcohol without becoming addicted, others fall into a cycle of substance abuse, dependence, and full-blown addiction. But why do some people get addicted and others don’t?

According to the National Center for Drug Abuse Statistics, 50% of people aged 12 or older have used illicit drugs at least once. Out of those individuals, 25.4% suffer from a substance use disorder.[1]

Addiction develops due to an array of underlying circumstances. Certain people face specific risk factors that make them more prone to addiction than others. While anyone can get addicted to a substance after repetitive use, some individuals find themselves suffering from the condition after only taking drugs once or twice.

Understanding the risk factors for addiction can help you or your loved ones take preventative measures to ensure that you do not develop a substance use disorder.

Risk Factors for Addiction

One of the reasons why some people get addicted to drugs while others don’t is that they have underlying risk factors that their peers do not face. For example, having a family history of addiction, suffering from mental health conditions, or experiencing a traumatic event puts you at an increased risk of developing an addiction.

Individuals who do not have these underlying risk factors may be less likely to abuse and become addicted to drugs or alcohol.

The common risk factors for addiction include:

Genetics

According to the American Psychological Association, “At least half of a person’s susceptibility to drug addiction can be linked to genetic factors.”[2]

Genes are functional units of DNA that provide the information responsible for directing your body’s basic cellular functions. Genes determine what color your hair will be, how tall you are, and even how susceptible you are to developing certain diseases like heart attacks, diabetes, or addiction.

However, it is important to note that genetics are never solely responsible for the development of addiction. If you have a genetic predisposition to addiction, you must also suffer from other risk factors to develop a substance use disorder. According to the National Institute on Drug Abuse, “research shows that a person’s health is the result of dynamic interactions between genes and the environment.”[3]

Mental Health

When you suffer from a mental health condition, you are more likely to develop substance abuse issues. This is especially true if your mental illness is left untreated because mental disorders can be extremely difficult to cope with, often causing individuals to seek out forms of self-medication.

While any mental health issue can put you at an increased risk of developing an addiction, certain illnesses are highly linked to substance abuse. For example, bipolar disorder often causes people who are experiencing mania to engage in impulsive and risky behaviors like abusing drugs or alcohol.

According to the National Institute on Mental Health, “brain changes in people with mental disorders may enhance the rewarding effects of substances, making it more likely they will continue to use the substance.”[4]

Traumatic Experiences

When someone experiences something traumatic, they often deal with difficult emotions and painful memories. Without professional treatment, the symptoms of past trauma can become so difficult to cope with that you begin participating in unhealthy coping mechanisms. More often than not, this leads to self-medication with drugs and alcohol.

According to the National Child Traumatic Stress Network, trauma exposure led to substance abuse in up to 76% of individuals.[5]

A history of trauma is one of the most common risk factors for addiction. Because of this, people who have suffered from a traumatic event should always seek counseling to process their trauma before it impacts their lives further.

Early Use

The large majority of people who suffer from addiction report abusing substances in their adolescent years. When you abuse drugs or alcohol before your brain is fully developed, you may experience changes in your brain that put you at an increased risk of addiction.

Substance abuse can affect adolescent brain development by:

• Creating memory issues
• Ingraining expectations of unhealthy habits into brain circuitry
• Inhibiting your development of perceptual abilities
• Reducing your ability to experience pleasure naturally
• Interfering with neurotransmitters and damaging important connections within the brain

Keeping this in mind, abusing substances as a child or a teen increases your risk of developing an addiction for several reasons. One of the main reasons is that your impulse control is not fully developed until your mid to late twenties. When you are abusing substances as an adolescent, your ability to control how much and often you use drugs is extremely low.

Are there additional lifestyle or behavioral risk factors for addiction?

Yes. Beyond biological and environmental influences, certain behaviors and life patterns can increase vulnerability to addiction.

1. Early initiation of substance use
   Beginning alcohol or drug use at a young age increases the likelihood of developing addiction later in life.
2. High‑stress environments
   Chronic stress from work, family challenges, or social pressures can make substances more appealing as a way to cope.
3. Peer influence and social settings
   Being surrounded by friends or social groups where substances are readily used increases exposure and normalizes use.
4. Easy substance availability
   Living in communities where alcohol or drugs are readily accessible makes experimentation and repeated use more likely.

These factors interact with an individual’s biological and psychological profile, shaping the overall risk for addiction.

How psychological resilience and protective factors can influence addiction risk

Risk factors do not act in isolation, and their influence can be balanced by psychological and social protective factors that help reduce the overall likelihood of addiction. Individuals with strong coping skills, supportive relationships, and stable routines often manage life stressors without resorting to substance use. Research shows that positive engagement in activities such as school, work, hobbies, and community involvement can foster resilience and provide alternatives to drug or alcohol use as a means of relief.

Psychological factors such as self‑esteem, problem‑solving ability, and realistic goal setting also contribute to a person’s capacity to navigate challenges without adopting harmful coping mechanisms. Family support, healthy peer connections, and mentorship can enhance emotional stability and reinforce adaptive behaviors when faced with stress or peer pressure.

Clinically, prevention programs that strengthen these protective factors—alongside education about substance use—reduce vulnerability to addiction by encouraging healthier responses and discouraging early substance experimentation. Understanding both risk and resilience supports more effective prevention, early intervention, and long‑term recovery outcomes for individuals and communities.

Why mental health conditions increase the risk of addiction

Mental health disorders often occur alongside substance use disorders, creating a cycle that increases vulnerability and complicates recovery. Conditions such as depression, anxiety, post-traumatic stress disorder (PTSD), and attention-deficit/hyperactivity disorder (ADHD) can lead individuals to use substances as a form of self-medication.

When these mental health symptoms go untreated, substance use may temporarily relieve distress, reinforcing the behavior and deepening dependence. Managing co-occurring disorders requires a dual approach, addressing both the mental health condition and the substance use simultaneously. Comprehensive treatment programs that integrate mental health care with addiction therapy are essential for breaking this cycle. By addressing mental health as part of both prevention and treatment, individuals gain stronger resilience, reduced risk of relapse, and better long-term recovery outcomes.