For many, attention deficit hyperactivity disorder (ADHD) is something associated with childhood. People imagine restless kids who struggle to sit still, forget to turn in homework, or get easily distracted in class. What often goes unnoticed is that ADHD does not simply disappear with age.Â
Many children with ADHD grow into adults who face challenges with focus, organization, and impulsiveness. However, there is a far more serious concern—one that extends beyond daily difficulties.
Research has found that ADHD can influence overall health and, in some cases, shorten life expectancy. A recent study published in The British Journal of Psychiatry (2025) examined long-term health trends among adults diagnosed with ADHD. The findings were alarming. Compared to the general population, men with ADHD were estimated to have 4.5 to 9 fewer years of life, while women lost 6.5 to 11 years on average.
These numbers raise an important question: Why does ADHD appear to affect lifespan? The condition itself is not fatal, yet the way it influences lifestyle choices, mental health, and medical care plays a major role in these shortened life spans. While ADHD is often viewed as a behavioral or academic issue, its impact on physical health is equally, if not more, significant.
The Study That Changed How We See ADHD and Mortality
The study, led by Dr. Elizabeth O’Nions and her team at University College London, analyzed over 30,000 adults with ADHD. The researchers compared them to a group of 300,000 individuals without ADHD, ensuring the groups were matched by age, sex, and primary care practice.
To assess life expectancy, the researchers used a life-table method, a statistical technique that calculates the likelihood of survival at different age intervals. Unlike previous studies, which relied on indirect estimates, this method provided real-world mortality data from health records.
The study found that people with ADHD were at higher risk for chronic illnesses, psychiatric disorders, and behaviors that increase the likelihood of early death. The most common causes of premature mortality included:
- Heart disease and metabolic disorders such as high blood pressure, diabetes, and obesity.
- Substance use and smoking, which were significantly more common among those with ADHD.
- Accidental injuries, particularly from reckless driving.
- Suicide and self-harm, which were reported at much higher rates in adults with ADHD.
The results confirmed what previous research had suggested: The biggest threat is not ADHD itself but how it affects a person’s ability to make healthy decisions over time.
How ADHD Disrupts Long-Term Health
Many of the health risks associated with ADHD stem from executive dysfunction. This refers to the brain’s ability to plan, organize, and regulate behaviors. People with ADHD often struggle with self-discipline, long-term goal setting, and impulse control, making it harder to develop and maintain healthy habits.
For example, people with ADHD may:
- Forget to schedule or attend medical appointments, leading to undiagnosed or unmanaged health conditions.
- Struggle with consistent exercise and balanced diets, increasing the risk of obesity and cardiovascular disease.
- Have difficulty quitting smoking or reducing alcohol consumption.
- Engage in impulsive activities, such as reckless driving or unsafe behaviors, increasing the risk of accidents.
These challenges create a cycle where small decisions add up over time, ultimately affecting lifespan. What might seem like a missed doctor’s appointment one year can turn into undiagnosed high blood pressure the next, leading to severe complications later in life.
Mental Health and ADHD
One of the most striking findings of the study was the high prevalence of mental health disorders among adults with ADHD. Many participants had been diagnosed with:
- Depression
- Anxiety disorders
- Personality disorders
- Bipolar disorder
These conditions are concerning because they contribute to increased rates of self-harm and suicide. The emotional struggles that come with ADHD, such as chronic frustration, social difficulties, and feelings of failure, often lead to higher levels of hopelessness and impulsivity.
The danger lies in how ADHD influences decision-making. When someone with ADHD experiences emotional distress, they may be more likely to act on impulse, leading to dangerous or life-threatening situations.
The study also found that ADHD is linked to poor sleep patterns, another major factor in long-term health. Sleep deprivation increases the risk of heart disease, mental health decline, and weakened immune function, further contributing to premature mortality.
Why Early Diagnosis and Treatment Are Essential
One of the key takeaways from the study is that early diagnosis and treatment can make a significant difference. Many adults with ADHD remain undiagnosed, allowing unhealthy habits to develop for years before they realize they need help.
ADHD is highly treatable. A large-scale study in Sweden examined data from 148,578 individuals with ADHD, and found that those who started ADHD medication had a 21% lower risk of death from any cause and a 25% lower risk of death from unnatural causes, such as accidents or suicide.
 While the medication did not show a significant effect on deaths from natural causes like illness, the results suggest that treating ADHD can help prevent many premature deaths linked to impulsive behaviors and poor decision-making.Â
Treatments such as:
- Stimulant and non-stimulant medications to improve focus and impulse control.
- Behavioral therapy to help with planning, organization, and emotional regulation.
- Cognitive-behavioral therapy (CBT) for managing anxiety and depression.
- Lifestyle coaching for developing better sleep, nutrition, and exercise habits.
These interventions are not about changing the personality or “fixing” ADHD. They are about giving people the tools to manage symptoms in a way that leads to longer, healthier lives.
Take Control of ADHD and Your Health
ADHD has a profound impact on long-term health and longevity. The way ADHD shapes habits, mental health, and self-care routines can mean the difference between a long, healthy life and one cut short by preventable illnesses or accidents.
This is why early detection and treatment matter. Understanding how ADHD influences daily choices is the first step in taking control and making changes that lead to better health outcomes.
At Zeam Health & Wellness, we specialize in providing comprehensive mental health care for adults with ADHD. Our team offers:
- Psychiatric evaluations and therapy
- Medication management
- Innovative treatments like Spravato, esketamine, ketamine, TMS, and psychotherapy
If you or a loved one struggles with chronic forgetfulness, impulsiveness, or difficulty managing responsibilities, do not wait for problems to escalate. Schedule an ADHD screening with us today and start taking steps toward a healthier future.
