Your produce probably has pesticide residue on it

Pesticides on your produce? It's more likely than you think.

A study by the Environmental Working Group found that around 70 percent of U.S. produce still has pesticide residue even after customers wash it, reports The Hill.

Strawberries, spinach and kale ranked highest in residue, and avocados, pineapples and sweet corn had the least. Coming in third, this is kale's highest ranking in recent memory and its first appearance within the top 12 since 2009.

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Nearly 60 percent of kale's samples tested positive for a possible carcinogens, coming as a surprise to some people working on the survey, reports The Hill.

"Fruits and vegetables are an important part of everyone's diet, and when it comes to some conventionally grown produce items, such as kale, choosing organic may be a better option," EWG toxicologist Alexis Temkin said in a statement.