Just in case this helps someone...

Since my teen years (when I had amalgams put in), I had much trouble sleeping. Throughout the 90's, the problem was so bad that it took me—on average—2 hours each night to get to sleep.

The only things that would help were:

(1) exercise, and
(2) sleeping pills containing (Diphenhydramine hydrochloride).

Of course, in the last half of the 90's, I could no longer exercise without getting sick so this was no longer an option. Even herbal sleeps aids (5-HTP, Valerian, Kava Kava, and others) did not work for me because the root of the issue was a racing mind (precursor to autism).

When my amalgams were removed in July of 2000, my average time to get to sleep immediately became about 10 minutes. The change was sudden and remarkable.