A cancer diagnosis is associated with a significant increase in the likelihood of subsequent criminal convictions, according to a recent study analyzing decades of Danish administrative data. The research, published in February 2026, revealed that individuals diagnosed with cancer are more likely to be convicted of crimes in the years following their diagnosis, a phenomenon researchers have likened to the plot of the television series Breaking Bad.
The study, conducted by economists, examined the records of 368,317 people diagnosed with cancer in Denmark between 1980, and 2018. Researchers compared their criminal records to a control group without a cancer diagnosis. While newly diagnosed cancer patients initially exhibited a decrease in criminal activity – likely due to the demands of intensive treatments like radiation and chemotherapy – a pattern emerged of increased convictions in later years.
The types of crimes committed by those with a cancer diagnosis tended to be less severe than those depicted in the fictional Breaking Bad, with offenses such as shoplifting and drug possession being more common. However, researchers emphasize that even these transgressions can have serious consequences for individuals, their families, and victims. The study’s findings suggest a complex relationship between serious illness and criminal behavior.
Researchers from Tilburg University and the University of Copenhagen initiated the study after observing parallels between real-life circumstances and the narrative of Walter White, the chemistry teacher in Breaking Bad who turns to methamphetamine production after receiving a cancer diagnosis. The study aimed to determine whether a similar shift in behavior could be observed in real-world cancer patients.
The Danish data allowed for a comprehensive analysis, linking health records with criminal justice information. This approach enabled researchers to control for various demographic and socioeconomic factors, strengthening the validity of their findings. The initial decrease in crime rates immediately following a cancer diagnosis was described by researchers as “intuitive,” given the physical and emotional toll of treatment.
The study does not establish a direct causal link between cancer and criminal behavior, but it highlights a statistically significant correlation. Further research is needed to understand the underlying mechanisms driving this pattern, including the potential roles of financial strain, psychological distress, and changes in risk assessment following a life-altering diagnosis.
