Update (November 2025): Toronto continues to face a serious opioid crisis, with 523 opioid toxicity deaths reported in 2023 and thousands of suspected overdose calls to paramedics each year. Youth and young adults remain especially vulnerable, and the crisis persists despite ongoing prevention and harm reduction efforts. This article has been updated with the latest local statistics and insights to help readers understand the current state of opioid use, addiction, and risk factors in Toronto.
Toronto continues to grapple with a serious opioid crisis, affecting people of all ages and backgrounds. Understanding how opioids become addictive, who is most at risk, and the latest statistics can help communities respond effectively.
How Opioids Become Addictive
Opioids — whether prescribed or obtained illegally — have a high potential for addiction because of their effects on the central and peripheral nervous systems. In the brain, they alter pain perception, creating relief without fully eliminating discomfort. In the spinal cord, they block pain signals, while in the brainstem, they slow breathing — sometimes dangerously. Opioids also impact the digestive system, often causing nausea, vomiting, and constipation.
Opioid receptors, naturally present in the body, are activated by these substances, triggering “feel-good” chemicals like endorphins and enkephalins. Over time, the brain reduces its natural production of these chemicals, leading to dependence and increased tolerance. Without medical guidance, individuals may turn to street-sourced opioids, which can be contaminated and increase overdose risk.
Opioid Use in Toronto: Recent Data
Toronto remains heavily affected by opioid-related harm. In 2023, 523 opioid toxicity deaths were recorded, with paramedics responding to approximately 4,802 suspected opioid-overdose calls. Non-fatal overdose calls in 2022 numbered 3,684, highlighting the ongoing strain on emergency services. Provincially, Ontario reported 2,231 opioid-related deaths in 2024, showing that the crisis extends beyond Toronto’s borders. These statistics underscore the persistent severity of opioid misuse and the urgent need for prevention, education, and harm reduction strategies.
Risk Factors
Certain factors increase the likelihood of developing opioid dependence or addiction:
Poverty, unemployment, or unstable living conditions
Family or personal history of substance use
Young age and high-risk social environments
Mental health challenges, including depression or anxiety
Previous addiction treatment or exposure to high-risk peers
By identifying and addressing these risks early, healthcare providers, educators, and families can help reduce preventable overdoses and support recovery.
Taking Action
Awareness is a key step in combating the opioid crisis. Understanding how opioids work, recognizing risk factors, and reviewing up-to-date local statistics can empower communities to act. If you or a loved one are struggling with opioid use, reaching out for guidance and support from trained professionals can save lives.