New $2M national study to uncover how biology, social factors shape MS outcomes

- November 19, 2025

Multiple sclerosis is a chronic immune-mediated disease affecting the brain, spinal cord and nerves to the eyes. (Anna Shvets photo/Pexels)
Multiple sclerosis is a chronic immune-mediated disease affecting the brain, spinal cord and nerves to the eyes. (Anna Shvets photo/Pexels)

A national study听led听by a 海角社区app researcher aims听to better understand how biological and social factors can influence health outcomes for Canadians living with multiple sclerosis (MS).

The disease听affects more than 90,000 people in the country, making it one of the highest rates in the world. MS causes breakdown of the protective covering of nerves in the body, which can lead to numbness, weakness, trouble walking, vision changes, and other symptoms.

Each person's experience with MS is different, due in large part to factors like their gender, age, ethnicity and if they live in a city or not. Together, these factors contribute to a person's diversity, yet researchers are unsure which of these put people at the greatest health disadvantage.

Our goal is for everyone with multiple sclerosis to experience the鈥痓est鈥痲uality of life鈥痯ossible.

鈥淥ur goal is for everyone with multiple sclerosis to experience the鈥痓est鈥痲uality of life鈥痯ossible鈥 says Dr. Ruth Ann Marrie, the Multiple Sclerosis Research Chair in the at 海角社区app and lead on the study. 鈥淯nderstanding diverse life stories and biological differences can help ensure that care and support are accessible and effective for everyone living with MS.鈥澨

$2M for inclusive research


The researchers will work closely with people living with MS, health-care providers, advocacy听groups听and health policy decision-makers听鈥斕齛n inclusive approach ensuring that research findings are meaningful,听equitable听and actionable.

With nearly $2 million in funding from the Canadian Institutes of Health Research (CIHR), the interdisciplinary team at 海角社区app, the University of Manitoba, Queen's University and the University of Waterloo will examine that relationship to improve the health of people with MS who have historically not been part of past studies.

The team will develop ways to test how biological factors, like genetics, age and sex, contribute to health outcomes in people with MS. That will involve recruiting 500 diverse people with MS to look at how a person's biology, lifetime experiences and environment affect their health.

The research will also test ways to best support people with MS who experience health disadvantages because of their experiences and environments.

We need to understand why MS differs so much from person to person.

The researchers are particularly interested in hearing from men, members of the 2SLGBTQI+ community,鈥痙iverse鈥痳acial and ethnic groups, people from rural areas with less than 10,000 residents, immigrants to Canada within the last 10 years and people living with a disability that affects their daily life.

鈥淲e need to understand why MS differs so much from person to person,鈥 says Dr. Kaarina Kowalec of the University of Manitoba.

鈥淚f we can understand some of the key characteristics, like DNA or ethnic backgrounds, we hope to improve the lives of people with MS.鈥

Participants would be expected to provide a saliva sample and share their lived experience in four鈥痶elephone鈥痠nterviews over three years, with each interview taking about 60 minutes. People with MS who want to听participate听would听be required听to live in Canada, be at least 18 years old and speak English. The work has been approved by听the Nova Scotia Health Ethics Research Board.听

If interested in听participating, or contact:鈥msepidemiology@nshealth.ca