Home » Health » A new Canadian study shows that COVID-19 can increase the risk of type 2 diabetes, particularly in men and those with severe cases of the virus.

A new Canadian study shows that COVID-19 can increase the risk of type 2 diabetes, particularly in men and those with severe cases of the virus.

According to recent studies, severe cases of COVID-19 are being linked to new diabetes diagnoses. This discovery has raised concerns about the long-term impact of the virus on individual health, as well as the potential burden on healthcare systems in the future. In this article, we will explore the findings of these studies and what they mean for both COVID-19 patients and the broader public health community.


A new study conducted in Canada has found that COVID-19 infections can increase the chance of being diagnosed with type 2 diabetes by more than triple within a year. The study showed that even men who had mild cases of COVID-19 were significantly more likely to be diagnosed with type 2 diabetes than non-infected men, while women did not show an increased risk unless they were severely ill. Both men and women who had severe cases of COVID-19 were at the highest risk, with people who were hospitalized for COVID-19 treatment having more than a doubled risk of being diagnosed with type 2 diabetes, and those who were admitted to intensive care units having more than a tripled risk.

The research suggests that COVID-19 infections can have long-term effects, with the study’s co-author Dr. Naveed Z. Janjua stating that “we’re seeing lingering effects that are lifelong.” The study, which was published in JAMA Network Open, analyzed health data from 629,935 people from 2020 to 2021, with 20% of them being diagnosed with COVID-19 during that time. Most people in the study had not been vaccinated because vaccines were not widely available at that time.

The authors of the study cautioned that their findings could not say that COVID-19 causes type 2 diabetes, but rather, in a commentary published alongside the study, Pamela B. Davis, MD, PhD, said the link between COVID-19 and type 2 diabetes makes sense because COVID-19 is known to impact the pancreas, which makes insulin. Insulin is a hormone that helps the body regulate blood sugar—a process that doesn’t work properly in people with diabetes.

The study’s researchers estimated that the increased pattern of diagnoses of diabetes following COVID-19 infection could increase the rate of the disease occurring in the general population by 3% to 5% overall. The study highlights the importance of monitoring the long-term effects of COVID-19 infections and the potential health risks associated with them.


In conclusion, the association between severe COVID-19 and new diabetes diagnoses is a concerning discovery that requires further investigation. While the exact mechanisms behind this link remain unclear, it highlights the importance of closely monitoring individuals who have recovered from the virus for potential long-term health complications. Additionally, this new data underscores the need for continued efforts to prevent severe COVID-19 cases through vaccination and other public health measures. As we continue to unravel the mysteries of this pandemic, it is crucial that we remain vigilant in our efforts to protect ourselves and our communities.

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