Canadians under the age of 65 have a greater risk of developing diabetes if they live near a high number of fast-food restaurants and few healthier dining options, known as fast-food swamps, according to researchers at the Dalla Lana School of Public Health.
The study, Relative and absolute availability of fast-food restaurants in relation to the development of diabetes: A population-based cohort study, published on June 9, 2016 in the Canadian Journal of Public Health, is the first in Canada to examine whether living within walking access to various types of restaurants within urban residential areas influences the risk of developing diabetes among adults.
At the outset of the study, researchers identified individuals without diabetes and followed them forward in time to see who did or did not develop diabetes. After accounting for individual- and neighbourhood-level socio-economic factors and neighbourhood walkability, researchers found that individuals had a 79 per cent higher risk of developing diabetes when their neighbourhoods had a disproportionately high volume of fast-food outlets and few restaurants of another type.
"Our results show that having restaurant options that offer healthier alternatives to fast-food — for example cafes, sit-down restaurants or coffee shops — may be important for mitigating people's risk of developing diabetes," said Jane Polsky, a PhD candidate in the Division of Social and Behavioural Health Sciences. "The double whammy of having high numbers of fast food restaurants with few healthier alternatives was associated with the highest risk of diabetes."
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