Pineapple will eat the tongue will be numb mainly because the pineapple contains bromelain to stimulate the tongue mucosa caused. Pineapple contains bromelain, which is an enzyme that can break down muscle proteins and has a stimulating effect, and this bromelain is mostly concentrated in the center of the pineapple, so if you eat the pineapple directly, it will cause numbness of the tongue. Before eating pineapple you can cut off the center or soak it in lightly salted water for a few minutes. After soaking and then eating pineapple tongue numbness will be reduced or disappear. So pineapple eat tongue numbness and pineapple itself contains bromelain related, can eat pineapple before soaking in salt water for a few minutes, if the tongue numbness is serious need to go to the hospital stomatology examination.