i dont really believe most of the claims around processed foods, but to each their own.
i myself use the desentification method to cope with my sensory issues; i deliberately expose myself to things i can just about handle, for just long enough to not meltdown, training my tolerance and meltdown suppression, after i feel neutral around that situation, i up the ante and go for even worse situations.
using this method, i am able to be at rave parties without melting down (for a short period of time, and it still drains my energy to nothing is left, but i survive without a meltdown)