The Heart and Stroke Foundation is demanding the Trudeau government move to eliminate the online marketing of all food and beverage products to children under 17.
A study it commissioned found that collectively, children are exposed to 25-million food and drink ads a year on their 10 favourite websites and most products are the unhealthy kind.
For kids aged two to 11, the most frequently advertised categories on the sites were fast-food restaurants, cakes, cookies, ice cream, and breakfast cereals.
Kellogg's Pop-Tarts had the most ads for a single product, while Red Bull Energy Drink was in the top five.