By fad diet, I meant more that a lot of unsubstantiated claims have been made about keto diets due to the recent resurgence of popularity. It's not to say that it's not effective, it definitely is and should not be undertaken lightly. It's a medical treatment that people pass off as unsubstantial, like adding more kale to their diets. I tried it myself, but discontinued during the "keto flu". Just not for me.

That said, a simpler solution like DLPA or uridine is more optimal for the post and OP's goals. They're not without their downsides, but neither is keto. Maybe keto is a solution for neurotransmitter re-balance post amphetamine therapy, but the research hasn't been done yet.