Canada has saltiest fries, sandwiches and salads, study finds

French fries sold at major fast-food chains in Canada contain more than double the amount of salt of those sold at U.S. locations, according to a new international study that found salt levels in fast foods varied significantly in different countries.

Researchers compared the salt content in breakfast items, burgers, chicken products, pizza, salads, sandwiches and french fries sold at six major fast-food companies in six developed countries.

The chains in Canada sold the saltiest sandwiches, salads and fries, while breakfast items, chicken products and pizza sold in the United States were the saltiest. Burgers in New Zealand contained more salt than any other country, the study, published Monday in the Canadian Medical Association Journal, found.