Vitamin D has been touted as a "wonder treatment" with a lot of health benefits. But what can vitamin D actually do for my health? This week on The Dose, Dr. Peter Lin, a Toronto-based family physician, speaks about what the research shows, dosage amounts, and much more.

Since the first days of the pandemic, people who have recovered from the coronavirus have complained of long COVID symptoms. There’s still a lot to learn about the condition, but researchers are looking for answers. We spoke with Manali Mukherjee, assistant professor of medicine at McMaster University and affiliate scientist with the Research Institute of St. Joe’s Hamilton.

This year's allergy season has come early in parts of Canada, with some specialists saying there's growing evidence to suggest a connection to climate change. We spoke with Dr. Anne Ellis, professor of medicine and chair of the Division of Allergy and Immunology at Queen's University.

The sixth wave of COVID-19 has seen an increase in hospitalizations and more ICU admissions. What’s different this time is that we have a new medication called Paxlovid that can keep at-risk people out of hospital. We hear all the details on Paxlovid from Kelly Grindrod, a pharmacist and associate professor at the school of pharmacy at the University of Waterloo.

COVID case counts are once again climbing in many parts of Canada along with hospitalizations. This week, the National Advisory Committee on Immunization (NACI) recommended that a fourth dose of the COVID-19 vaccine be given to all Canadians ages 80 and up.

You may have heard of prebiotics and probiotics, but now there’s a new term used by researchers: postbiotics. This week we’re asking: What do we know about postbiotics? We speak with Jennifer Stearns, assistant professor at McMaster University’s department of medicine.

Psychedelics are no longer just illegal street drugs. A lot of research has come out about their benefits as treatments for people with mood and other mental health disorders. So what do we know about how psychedelics can treat mental illness? We hear from Dr. Robert Tanguay, clinical assistant professor at the University of Calgary and Chief Clinical Medical Officer at the Newly Institute.

Countries in the European Union are seeing a steep rise in COVID-19 cases, just weeks after lifting COVID-19 measures. Meanwhile, in most parts of Canada, pandemic restrictions are being eased. So with provinces lifting mask mandates, should I still wear a mask? We hear from Jason Tetro, a microbiologist and author of The Germ Files.

If you haven't been in to see your family doctor in the last two years, now may be the time to do it. So if I haven't had my regular checkup since before the pandemic, what should I ask my doctor? We find out from Dr. Peter Lin, a Toronto-based family doctor and a director at the Canadian Heart Research Centre.

Some sleep experts in Canada have seen a rise in insomnia and sleep-related complaints since the start of the pandemic. For some people, sleep aids can help them get some much-needed rest.

Dr. Brian Goldman, host of CBC podcast The Dose, spoke with Dr. Elliott Lee, a sleep specialist at the Royal Ottawa Mental Health Centre, about what we know about how effective sleep aids are in helping people stay asleep.