Here are some of the online books by Ehret who was a raw foodist in the 30s or so and originated the mucusless diet promoted by Dr Christopher teacher of Dr Schulze. He and his disciples achieved phenomenal health almost unseen before
I read a treatise by one of his disciples who went raw (vegan) and was already healthy being a vegetarian many years
some of what she then got by eating mainly above the grounds fruits and veggies were as follows:
-skin softer than a baby
-eyesight better than 20-20
-complete change of disposition that every commented on -her peace and loving demeanor
-could go up very steep hill without even breathing hard
-all aches and little ills he had went away she mentioned more but that is all I remember having read this about 325 years ago and being so impressed i never forgot it.