Medical misinformation is not a new phenomenon, but it has never been more visible, more widespread, or more dangerous than it is today. In a recent segment on CTV News, Dr. Paul Roumeliotis, a pediatrician and medical officer of health, took on the growing challenge of false health claims, particularly those surrounding COVID-19. The World Health Organization has described the situation as an “infodemic”—an overwhelming flood of information, some accurate and some not, that makes it difficult for people to find trustworthy guidance and take appropriate action. Dr. Paul’s message is clear: misinformation about health can be just as harmful as the disease itself. It can lead people to take unproven treatments, avoid vaccines, ignore public health measures, and spread fear and confusion in their communities. The consequences are not abstract. People have been poisoned by taking household cleaners or industrial chemicals after hearing false claims about “miracle cures.” Others have delayed seeking care for serious symptoms because they were told hospitals were unsafe or that doctors were exaggerating the threat. The COVID-19 pandemic has exposed a parallel pandemic of falsehoods, and Dr. Paul argues that addressing it requires the same urgency and collective effort as fighting the virus. Understanding why misinformation spreads, how to recognize it, and what to do about it has become an essential skill for every patient, parent, and citizen.
During the pandemic, medical misinformation has taken many forms. Some claims have centered on unproven treatments, such as hydroxychloroquine, ivermectin, or high-dose vitamins and zinc. While some of these substances have legitimate medical uses, they are not proven treatments for COVID-19, and taking them without medical supervision can be dangerous. Ivermectin, for example, is used to treat parasitic infections in animals and humans, but the versions sold at farm supply stores are not meant for human consumption and can cause serious harm. Other false claims have promoted dangerous “cures” such as drinking bleach, using ultraviolet light inside the body, or inhaling steam with toxic substances. These ideas are not only ineffective—they are potentially lethal. Vaccine misinformation has been especially damaging. False stories have claimed that COVID-19 vaccines alter human DNA, cause infertility, contain microchips, or are part of a government plot. These claims have been repeatedly debunked by scientists and public health agencies, yet they continue to circulate on social media and in private messaging groups. There are also conspiracy theories about 5G networks spreading the virus, about the pandemic being planned, and about masks being harmful or useless. Dr. Paul notes that misinformation often mixes a small kernel of truth with exaggeration and fear, which makes it harder to spot. A real study may be taken out of context, a rare side effect may be presented as common, or a legitimate scientific debate may be framed as proof that experts are lying. This blending of fact and fiction is what makes medical misinformation so insidious.
Why does misinformation spread so quickly? Dr. Paul points to a combination of psychological, social, and technological factors. In times of uncertainty, people naturally seek simple explanations and quick fixes. A message that offers a simple cure or a clear villain can feel more comforting than the complex reality of epidemiology and vaccine development. Fear and anxiety make people more vulnerable to alarming claims, especially when those claims appear to come from a trusted friend, family member, or online influencer. Confirmation bias also plays a role: people tend to accept information that fits their existing beliefs and reject information that challenges them. If someone already distrusts pharmaceutical companies or government institutions, they are more likely to believe stories that confirm that distrust. Distrust is not always irrational. Dr. Paul acknowledges that historical medical abuses, such as the Tuskegee syphilis study, and ongoing inequalities in health care have created legitimate reasons for some communities to be skeptical. But that skepticism is being exploited by bad actors who spread misinformation for profit, attention, or ideological reasons. Social media algorithms make the problem worse. Platforms are designed to maximize engagement, and sensational, emotional, or outrageous content tends to generate more clicks, shares, and comments than sober, factual information. As a result, false claims can reach millions of people in a matter of hours, while corrections struggle to get any traction. Echo chambers form when people only interact with others who share their views, reinforcing false beliefs and making them feel more credible. Dr. Paul emphasizes that misinformation is not simply a matter of ignorance; it is a sophisticated manipulation of human psychology, and it requires a thoughtful response.
Recognizing misinformation is the first step in protecting yourself and your family. Dr. Paul advises looking for several red flags. If a health claim uses sensational language, promises a “miracle cure,” or says that “doctors don’t want you to know this,” it should be treated with suspicion. Legitimate medical information is usually presented with nuance, uncertainty, and citations to evidence. Misinformation often has no named author, no date, no sources, or references to studies that do not exist or do not say what is claimed. Another warning sign is the use of anecdotes instead of evidence. A story about someone who got better after taking a certain supplement is not proof that the supplement works. Anecdotes can be powerful, but they are not scientific data. Dr. Paul also encourages people to check the source of the information. Is it from a recognized public health agency, such as the World Health Organization, the Centers for Disease Control and Prevention, or a provincial health ministry? Is it from a major medical institution, a peer-reviewed journal, or a university? Or is it from a random blog, a social media post, or a forwarded message with no clear origin? Even if a source appears credible, it is important to check the date, because health guidance changes as new evidence emerges. Old information may be outdated or no longer accurate. Fact-checking websites, such as Snopes, FactCheck.org, and Health Feedback, can help verify specific claims. Dr. Paul also recommends talking to your doctor, pharmacist, or other health care provider before acting on any health advice you see online. They can help separate evidence-based recommendations from fads, rumors, and dangerous falsehoods.
Knowing how to respond to misinformation is just as important as recognizing it. Dr. Paul urges people not to share information unless they have verified it. If you have already shared something that turns out to be false, correct it publicly. Admitting a mistake is a small price to pay for stopping the spread of harmful content. When it comes to friends and family members who believe misinformation, correction requires patience and empathy. Confronting someone with ridicule or anger often makes them dig in deeper. Instead, Dr. Paul suggests having a respectful, private conversation. Ask questions like, “Where did you see that?” or “What evidence convinced you?” Listen to their concerns and try to understand the underlying fears. Then share reliable sources and explain why they are trustworthy. It can help to focus on shared values, such as protecting children, keeping the community healthy, or getting back to normal life. For example, instead of arguing about vaccine efficacy, talk about how vaccination allows grandparents to hug their grandchildren safely. Facts matter, but trust matters more. Dr. Paul also says that public health officials need to do a better job of communicating. They must be transparent about what is known and what is not known, admit when guidance changes and explain why, and use trusted messengers, such as local doctors, nurses, and community leaders, to reach people who are skeptical of authority. Social media companies also have a responsibility to label false content, reduce the reach of misinformation, and promote authoritative health information. Governments and schools can invest in health literacy so that people are better equipped to evaluate claims before they believe them.
Ultimately, Dr. Paul says, the fight against medical misinformation is a shared responsibility. No single doctor, agency, or platform can solve the problem alone. It requires a cultural shift in how we consume and share health information. The pandemic has shown that science is not perfect—it evolves, it makes mistakes, and it is often messy—but it is still the best tool we have for protecting health. Evidence-based medicine saves lives, while misinformation costs them. Dr. Paul’s advice is simple but powerful: pause before you share, verify before you believe, and ask questions when something seems too good to be true. If a claim makes you angry, afraid, or hopeful, that is exactly the moment to be extra careful. Emotional manipulation is a common tactic in misinformation, and recognizing it can help you step back and think critically. He also encourages people to be kind to those who have been misled. Shaming people for believing false claims only drives them further into echo chambers. Instead, we should offer them a path back to trusted information. The “infodemic” may be overwhelming, but it is not unbeatable. By relying on credible sources, supporting clear public health communication, and having honest conversations with the people around us, we can reduce the harm caused by medical misinformation. As Dr. Paul reminds viewers, an informed public is a healthier public. The next time you see a health claim online, remember his advice: check the source, look for evidence, and talk to a health professional. In a world full of false information, the most important thing you can do is think before you share.
