No diet sodas! Aspartame eats holes in brain tissue. At temps over 83 or so, it degrades into formaldehyde, methanol and formic acid. Gulf War Sundrome was actually aspartame poisoning. Fake sugars are easily the most toxic thing you can put in your body.

When I detoxed all chemicals and preservatives and GMOs from my home and diet (i.e. changed all my food, soaps, detergents, toiletries, air fresheners, etc), my hair got thicker, my nails got stronger, and my coordination improved enough that I noticed a difference.