Substance abuse affects far more people than the individual using drugs or alcohol. It ripples outward to children, partners, coworkers, and entire communities. In the U.S. alone, roughly 21.2 million adults live with both a mental illness and a substance use disorder simultaneously, and the economic toll from lost productivity reached an estimated $92.65 billion in 2023. Understanding who carries this burden helps explain why substance abuse is treated as a public health crisis, not just a personal one.
The Person Using: Biology and Vulnerability
The most obvious person affected is the one with the substance use disorder, but vulnerability is not evenly distributed. Genetics account for roughly 50% of the risk of developing an addiction. This doesn’t mean a single “addiction gene” exists. Instead, hundreds of small genetic variations across the genome add up to increase or decrease susceptibility. Some are substance-specific: certain gene variants affect how the body metabolizes alcohol, producing unpleasant flushing and nausea that actually lower the risk of alcohol use disorder. Other variants in a nicotine receptor gene cluster on chromosome 15 influence how strongly a person responds to tobacco.
The other half of the risk comes from environment, life experiences, and timing. People who begin using substances during adolescence face especially steep odds. The front part of the brain, responsible for logical reasoning and impulse control, doesn’t finish maturing until the mid-20s. During the teenage years, the emotional and reward-processing regions of the brain develop ahead of this “braking system,” which helps explain why teens are more prone to risky decisions in the first place. Animal research has shown that adolescent brains exposed to alcohol sustain significantly more damage in the areas governing decision-making and working memory compared to adult brains. Early drug use can alter the trajectory of brain development, contribute to lasting cognitive impairment, and substantially raise the likelihood of a full substance use disorder later in life.
How Gender Shapes the Impact
Men have higher overall rates of illicit drug use and alcohol dependence across most age groups, but women who do use substances are just as likely to develop a disorder. In some cases, women may be more vulnerable. Research in both humans and animals suggests that women can be more sensitive to the rewarding effects of stimulants, with estrogen potentially playing a role in that heightened response. Women also metabolize alcohol differently: after drinking the same amount, women reach higher blood alcohol concentrations than men due to differences in stomach enzyme activity. This means the same number of drinks carries a greater physiological toll.
The economic data reflects these patterns. Of the $92.65 billion in productivity losses tied to substance use disorders in 2023, men accounted for about $61 billion and women for roughly $31 billion. Per person, each adult with a substance use disorder cost the economy an estimated $3,703 in lost work output alone.
Children and Families
Children growing up in households with active substance abuse are among the most deeply affected, and they often have no voice in the conversation. A parent’s addiction disrupts the attachment bond that young children depend on for emotional security. Without that foundation, children become far more vulnerable to anxiety, depression, and trauma-related conditions. The emotional landscape these kids navigate daily includes fear, confusion, shame, guilt, loneliness, and anger.
The outcomes show up in measurable ways. Children who experience abuse in these households are more likely to develop outward-facing problems: aggression, conduct issues, and conflict with authority. Children who experience neglect tend to develop inward-facing struggles like depression, social withdrawal, and difficulty forming friendships. In either case, the disrupted attachment pattern makes healthy peer relationships harder to build, which creates a cycle of isolation, school difficulties, and sometimes legal trouble. The conditions most strongly correlated with growing up in a substance-affected home include eating disorders, behavioral disorders, anxiety, depression, PTSD, and eventually substance use disorders of their own.
People With Mental Health Conditions
Substance abuse and mental illness feed each other in ways that make both harder to treat. People with mental health conditions are at higher risk of developing a substance use disorder, and people with substance use disorders are more vulnerable to developing new mental or physical health conditions. The overlap is enormous: approximately 21.2 million American adults have both a mental illness and a substance use disorder at the same time. This is not a coincidence or a niche population. It represents a significant share of everyone living with either condition.
When these conditions co-occur, treating just one rarely works. Someone managing depression who also drinks heavily will find that alcohol undermines their treatment. Someone in recovery from opioids who has untreated anxiety faces a constant trigger for relapse. Effective care addresses both conditions together, but access to that kind of integrated treatment remains limited for many people.
Lower-Income and Unemployed Workers
Substance abuse does not discriminate by income, but its consequences hit harder at the bottom of the economic ladder. Among people who have used illicit drugs, those with a household income below $20,000 per year are 36% more likely to report substance abuse problems compared to those earning $75,000 or more, even after accounting for differences in age, race, education, and other factors.
Employment status matters even more. Unemployed individuals who have used drugs are roughly 64% more likely to report substance-related problems than full-time workers, after adjusting for other variables. Part-time workers fall in between at about 26% higher risk. The relationship runs in both directions: job loss can trigger heavier use, and heavier use can lead to job loss. People with fewer financial resources also have less access to treatment, stable housing, and the kind of social support that aids recovery.
Workplaces and the Broader Economy
Employers and coworkers absorb a significant share of the damage. The $92.65 billion in productivity losses from substance use disorders in 2023 breaks down into four categories. The largest, at $45.25 billion, came from people unable to work at all. Absenteeism, meaning missed days among those still employed, accounted for $25.65 billion. Presenteeism, the reduced effectiveness of people who show up to work but can’t perform at full capacity, cost $12.06 billion. And lost household productivity, such as the inability to manage daily tasks and caregiving, added another $9.68 billion.
These numbers only capture morbidity-related losses. They don’t include healthcare spending, criminal justice costs, or the toll of premature death. For coworkers, the effects show up as heavier workloads, safety concerns, and strained team dynamics, costs that never appear in an economic report.
Communities and Public Safety
Substance abuse extends well beyond households and workplaces into the broader community. About 32% of state prisoners and 26% of federal prisoners reported committing their current offense while under the influence of drugs. Another 17% of state prisoners and 18% of federal inmates said they committed their crime specifically to get money for drugs. From the victim’s perspective, roughly 26% of people who experienced violent crime reported that their attacker was using drugs or alcohol at the time.
The strain on public systems is substantial. Emergency rooms, courts, child protective services, foster care, homeless shelters, and law enforcement all absorb demand driven in part by untreated substance use disorders. In communities with high rates of addiction, these systems can become overwhelmed, reducing their capacity to serve everyone else. Neighborhoods experience higher crime rates, lower property values, and a diminished sense of safety that affects residents regardless of whether they personally know anyone with a substance use problem.