Antibiotics are a cornerstone of modern medicine, but Canadians are becoming increasingly resistant to them. This means people are getting sicker and taking longer to get well. One culprit could be the large amounts of antibiotics given to the animals we eat — even when they're healthy.

In an important story about human health, Marketplace tests chicken samples from major supermarkets across the country and uncovers the alarming truth about antibiotic-resistant bacteria in our food.