03/04/2026
Let’s start with a simple picture: the disease model of addiction explains that substance use disorder is not about willpower or character, but about changes in how the brain works. Scientists have shown that repeated use of drugs or alcohol can actually alter brain circuits responsible for judgment, self-control, and motivation.
This means that addiction is a chronic condition—like diabetes or asthma—that can be managed and treated, not a personal failing.
Recent research confirms the biological roots of addiction. For example, studies have identified specific genetic markers that increase the risk for substance use disorders, and brain scans show that addiction changes how signals are processed. Specifically, it impacts dopamine, the brain’s “reward” messenger. That’s why people with addiction may struggle to stop using even when they desperately want to.
Here in Ohio, this science has shaped how treatment and recovery are approached. When you understand that addiction is a brain disease, it becomes clear that medical care, therapy, and community support—not shame or punishment—are what truly help. This knowledge has led to more effective treatment programs and less stigma, opening doors for thousands of Ohioans to seek help.
Learn more: https://ohio.aristarecovery.com/blog/the-disease-model-of-addiction/
Learn how Ohio’s approach to the disease model of addiction improves access to medical support, Medicaid coverage, and crisis intervention services.
