McGill study identifies most effective methods for early detection of tench, an invasive freshwater fish

As tench continue to spread through the St. Lawrence River, a study from McGill University provides fisheries managers with guidance on how to detect the invasive species, an essential first step in preventing it from reaching new waters. The findings can inform efforts to contain and manage existing populations, helping agencies determine how and where to carry out removal or control activities.

McGill researchers identify a range of unexpected chemical contaminants in human milk

An interdisciplinary team including researchers at McGill University has found a range of unexpected chemical contaminants in human milk samples from Canada and South Africa. The chemicals include traces of pesticides, antimicrobials and additives used in plastics and personal-care products. The findings were published across five papers.

Freshwater browning threatens growth and populations of economically important fish, McGill researchers say

Freshwater browning is stunting fish growth of some species, shrinking populations of others and changing the composition of fish communities, McGill-led research suggests. “Browning” refers to freshwater bodies turning tea-coloured, a phenomenon driven by higher levels of dissolved organic matter and/or higher levels of iron in the water. Causes include changes in land use and climate, and reduced acid precipitation.

Irradiated cannabis might still harbour toxic fungi and residues, McGill study finds 

Gamma irradiation, an industry-standard sterilization method for medicinal and recreational cannabis, does not fully eliminate toxic fungi or their chemical residues, a McGill University study has found. Current testing practices may also miss contamination, raising concerns about health risks for vulnerable users, particularly those with weakened immune systems. 

Findings suggest that certain medications for Type 2 diabetes reduce risk of dementia

A large McGill University study has found that two classes of medications commonly prescribed for Type 2 diabetes, both incretin-based, are associated with a reduced risk of dementia.

Drawing on clinical data from more than 450,000 patients, the research adds to growing evidence that incretin-based therapies have protective benefits for the brain.

Study offers evidence that racial bias is at play in overrepresentation of Black youth in Canadian child welfare systems

Researchers who examined Canadian child welfare data found that Black children were not only investigated at a higher rate than their white peers but were also more likely to be taken from their homes, even when the only difference between cases was the child’s race.

McGill Nursing students providing care for homeless and at-risk Montrealers

According to a 2015 census, there are just over 3,000 homeless people living in Montreal. This number does not account for those who are dealing with hidden homelessness, such as temporarily living with friends or family or other short-term accommodation.

In addition to the many challenges and stresses of homelessness—such as meeting immediate survival needs for food, water, clothing and shelter from the elements—taking care of health needs might seem insurmountable.