Cashews are in the Anacardiaceae family, as are mangoes, poison ivy, poison oak, etc. I keep track of this because I am ...

Mangoes contain urushiol, the same substance that causes allergic reactions from poison ivy and poison oak. (They're actually in the same plant family!) One 2019 study, showed that prior exposure ...

or the urushiol compound that exists on the skin of some mangoes can cause a rash or allergic reaction in some people that can be similar to coming into contact with poison ivy, notes Rael.