I had great success following Ted's borax recommendation for chronic fatigue and brain fog. When I read that it had the potential to decalcify the pineal gland, and that it could help to detox fluoride, I knew I had to give it a try.
(The other thing that I did differently was take Lugol's iodine and stop consuming fluoride in water or toothpaste.)
It was difficult to determine which thing helped the most, so I greatly reduced the borax, using only a pinch in water every 4 or 5 days. However, for about one month, I didn't use any at all and the brain fog returned, so I added the borax back in.
About 6 months after adding these things, my brain fog, energy level and mood are much improved - BUT I noticed a definite improvement within a week!
Definitely recommend for CFS sufferers.
PS, I've only sporadically used ACV, salt and baking soda too but generally remember when I am taking the borax.
PPS, I did a liver cleanse with olive oil and grapefruit juice a few weeks ago, and all the benefits of the borax and iodine were amplified, and I feel I need much less of them now.