Medicines called GLP-1 receptor agonists have become some of the most talked-about drugs in recent years. They were first developed to help people with type 2 diabetes manage their blood sugar levels.
Later, doctors discovered that these medicines could also help people lose weight by reducing appetite and making them feel full for longer. As a result, drugs such as Ozempic, Wegovy, and similar medications are now used by millions of people around the world.
At first, researchers focused mainly on the effects of these medicines on blood sugar, body weight, and heart health. However, scientists have started noticing that these drugs may also affect the brain.
Some studies suggest that people taking GLP-1 medications report fewer cravings for alcohol and other addictive substances. Others appear to have improved self-control and may find it easier to resist certain urges and impulses.
These observations have led researchers to ask an unusual question. Could medicines originally designed for diabetes and obesity also influence behaviors that are linked to crime and violence?
A new study published in the journal Criminology suggests that this possibility deserves closer attention. The research was led by Dr. Daniel C. Semenza and colleagues at Rutgers University. The team wanted to examine whether GLP-1 medications might affect the relationship between certain risk factors and violent behavior.
The researchers analyzed information from a nationally representative survey carried out in the United States in 2025. The study included 821 adults who had used GLP-1 medications at some point in their lives. The investigators focused on two factors that have long been associated with violence: impulsive behavior and alcohol use.
Impulsivity means acting without thinking carefully about the consequences. People who are impulsive may react quickly when they feel angry, upset, or stressed. They may have difficulty controlling emotions or delaying their responses.
Alcohol use can also increase the risk of aggressive behavior because drinking may lower self-control, affect judgment, and make some people more likely to act in ways they normally would not.
The study confirmed that both impulsivity and alcohol use were associated with violent crime. However, something interesting appeared when the researchers compared current users of GLP-1 medications with former users.
Among people who were actively taking the medications, the connection between these risk factors and violent behavior was significantly weaker.
In simple terms, people taking GLP-1 drugs still sometimes drank alcohol or acted impulsively. But these behaviors appeared less likely to lead to violent criminal actions compared with people who had stopped using the medications.
The pattern was particularly clear when it came to impulsivity. The findings involving alcohol use were less consistent but still suggested a possible beneficial effect.
Scientists do not yet know exactly why this might happen. One possible explanation is that GLP-1 medications affect brain regions involved in reward, stress, and decision-making. The brain contains networks that help people control urges, manage emotions, and evaluate consequences.
Researchers believe that these medications may influence some of these systems, making it easier for certain individuals to regulate their behavior.
The findings fit with other recent studies that suggest GLP-1 drugs may have unexpected effects beyond weight loss and diabetes management. Researchers have been increasingly interested in their possible role in reducing addictive behaviors, including heavy drinking and substance use.
The new study extends this line of research by raising the possibility that the medications could also affect behaviors linked to aggression and violence.
The researchers stress that the findings should not be interpreted as proof that GLP-1 medications prevent crime or violence.
Violent behavior is extremely complex and can be influenced by mental health, childhood experiences, relationships, financial stress, social environment, alcohol use, and many other factors. A medication alone is unlikely to eliminate these risks.
The study also has limitations because it was based on survey data and cannot prove cause and effect. Current users and former users of GLP-1 medications may differ in ways that were not fully captured by the research.
More studies will be needed to understand whether the medications directly influence behavior and to uncover the biological mechanisms that might explain the findings.
In reviewing these results, the study highlights how medications developed for one medical purpose can sometimes have unexpected effects on other aspects of health and behavior.
The particularly strong findings related to impulsivity are intriguing because poor impulse control is linked to many harmful outcomes, including addiction, risky behaviors, and interpersonal violence.
Although much more research is needed, the findings suggest that GLP-1 medications may influence brain function in ways that scientists are only beginning to understand. As the use of these drugs continues to grow worldwide, exploring their broader effects on human behavior could become an increasingly important area of public health research.
If you care about diabetes, please read studies about bananas and diabetes, and honey could help control blood sugar.
For more health information, please see recent studies about Vitamin D that may reduce dangerous complications in diabetes and plant-based protein foods may help reverse type 2 diabetes.
Source: Rutgers University.
