Skip to main content


How can I tell if health information is good or bad?


Author: Canadian Mental Health Association, BC Division


Anyone can post anything online. It's up to the readers to think critically about information to decide if it seems helpful, truthful, or safe. Here are key points to keep in mind as you determine which information is worth considering and which information doesn't pass the test.

Find the original source of the information, if you can

It's so easy to spread information online, and we can't assume that the source we're reading or watching is the original source. Before you can evaluate anything, you need to know where the claims come from and determine if it's a reliable source.

Reliable sources on the coronavirus and COVID-19 illness include the World Health Organization (WHO), Government of Canada ministries and agencies like Health Canada and the Public Health Agency of Canada, the Government of BC ministries and agencies like the BC Ministry of Health, and the BC Centre for Disease Control (BCCDC). Scientists and researchers at universities and other institutions and health sciences professionals are also important sources of information.

Read the entire story or post before you make any decisions

Headlines and titles need to be simple and short, so they can sometimes be misleading on their own. They may also be purposefully shocking or controversial to entice you to click to read more.

Look at the author

Websites that belong to governments, government-funded agencies, well-known health providers, universities, or groups of medical professionals are generally the most reliable. Be careful of sites that don't list the author or don't tell you much about themselves. Double-check the author and the credentials of any 'experts' quoted or cited to see if they are actually experts in the topic being discussed.

See what other sources say

Can you find other evidence from other sources to support the claims? Does the author list their sources? Are the sources legitimate, like research journals?

Be mindful of emotions

Unhelpful sources want you to feel a certain way: scared, angry, distrustful, vulnerable. Phrases like "Skyrocketing rates of infection" are sensational and they're meant to make people feel afraid. On the other hand, factual statements like "We have 50 new cases in BC" give you important information without playing into your emotions. Helpful news or information sources want you feel informed and empowered.

Ask yourself who benefits from sharing the information

Who is paying for the site? What products or services are being advertised? What links or other sites do they promote? Are you learning something from a story or experience, or are you simply being directed to buy a product or service?

A word on social media

Social media can be a great way to keep in touch with family and friends, especially as we practice physical distancing or self-isolation. Social media can also be an important way to learn from health experts and connect to support services and mutual aid groups in your community.

Like any other source of information, it's important to use good critical thinking skills when you use social media. Studies find that searching for health information on social media generally has very mixed results. You'll see both very poor-quality sources next to good-quality sources, and it's up to you to decide which is which. In addition, social media posts tend to be short and rarely capture everything you need to consider. They are generally useful as a way to start learning or exploring different points of view rather than a place to gather all the information.

Learn more

  • Visit to learn more about digital and media literacy

  • Visit to learn more about thinking critically around health claims (this resource is no longer updated daily, but all toolkits and lessons are still available)

This page is adapted from the Evaluating Mental Health and Substance Use Information info sheet.


About the author

cmha bc logo

The Canadian Mental Health Association promotes the mental health of all and supports the resilience and recovery of people experiencing a mental illness through public education, community-based research, advocacy, and direct services. Visit


Q&A is for readers who want to take charge of their well-being, support a friend or loved one, find good help, or just learn more about mental health and substance use. Here, the information and resource experts at HeretoHelp will answer the questions that we're asked most often. We'll offer tips and information, and we'll connect you with help in BC, Canada. If you have a question you’d like to ask, email us at [email protected], tweet @heretohelpbc, or log in to HeretoHelp and post a comment on this page.


Stay Connected

Sign up for our various e-newsletters featuring mental health and substance use resources.

  • eVisions: BC's Mental Health and Substance Use Journal, a theme-based magazine
  • Healthy Minds/Healthy Campuses events and resources
  • Within Reach: Resources from HeretoHelp
  • Jessie's Legacy eating disorders prevention resources, events and information

Sign up now