[noodlenotes]

You may not be getting enough electrolytes, especially salt. Try drinking broth, taking a salt tablet, or adding some salt to your water. For me, the brain fog lifts within half an hour of taking salt.

[hedora]

Also, take multivitamins when dieting.

It could be the water is helping, and not the salt.

Dieting tends to dehydrate me. Burning fat releases a boatloat of stored toxins, and does a number on the kidneys, etc.