2025 was a year of breakthroughs in health and medicine. Here are five

It was a tumultuous year in the world of health, marked by a resurgence of measles in Canada and budget cuts to research and science south of the border.

But despite these troubling developments dominating the conversation, medical researchers and doctors working in labs, hospitals and universities around the world also pushed the envelope this year, spurring positive innovations and improving how patients receive care.