Newly released data shows that Canadian obesity rates are skyrocketing alongside American rates. In 2004, 23 percent of adult Canadians were considered obese, up nine percentage points from the late 1970s. Adolescent obesity rates tripled during the same period.

Obesity rates in Canada are still lower than those in the US, where 30 percent of the adult population is considered obese. But interestingly, researchers attribute most of the difference to obesity rates in women—adult males have similar rates of obesity in both countries. 

Another statistical curiosity: Canadian men in higher income households were more likely to be obese.