When you think of healthy food, you probably think of kale. But a new report says Kalte might not actually be healthy, reported CNBC.
According to the Environmental Working Group, kale is one of the 11 fruits and vegetables known to be "dirty."
They rank the 12 produce items that contain the highest amount of pesticide residues. The group analyzes data from the Department of Agriculture's regular produce testing to determine the list.
Beneath kale on the list is strawberries, spinach, nectarines, apples, grapes, peaches, cherries, pears, tomatoes, celery, and potatoes.
"We were surprised kale had so many pesticides on it, but the test results were unequivocal," said EWG Toxicologist Alexis Temkin in a release.
More than 92 percent of kale had residue from at least two pesticides after washing and peeling.
"Some had up to 18. Almost 60 percent of the kale samples showed residual Dacthal, a pesticide that is known as a possible human carcinogen," added the report.
The group releases its "Clean Fifteen" list as well, highlighting the 15 produce items with the least amount of pesticide residue detected. It includes avocados, sweet corn, pineapples, frozen sweet peas, onions, papayas, eggplants, asparagus, kiwis, cabbages, cauliflower, cantaloupes, broccoli, mushrooms, and honeydew melons.
Consumers should buy organic produce whenever possible to avoid pesticides, according to the report. However, they don't discourage people from eating these vegetables if they can't afford to buy organic.
"The health benefits of a diet rich in fruits and vegetables outweigh the risks of pesticide exposure," EWG Research Analyst Carla Burns said in a release.