I haven't committed to a paleo diet and I know I never can, I enjoy the sweet tastes of corn and milk far too much, but I've made a lot of other major changes for the better. Simple things like hiking, climbing, martial arts, meditation, squatting to pee....All those add up to make a huge difference. But the best cure is just staying outside as much as you can, hot or cold, rain or shine, romping through the woods and prairie with your family: the plants and other animals. Even a lava rock or deer skull feels like a dear friend.
I used to drink 4-6 cans of soda way back in the day until I met my mate, who drinks absolutely nothing but water and encouraged me to do the same. I still drink quite bit of milk, fresh juice, and herbal teas, and a cup of something hot and caffeinated in the morning, but mostly distilled water. I wouldn't trust the purest well water in this age of poison. I also haven't taken any manmade medication since I was 14 and forcibly vaccinated, and I've been feverish sick maybe 4 times in the past 10 years. Though I do have nerve problems in my arm from those vaccines.
Never really had any major health problems, so it's hard to think of what has improved. Most of my issues are psychological (depression, panic attacks, Asperger's) that have led to under-eating, so there's the lethargy, coldness, and extra anxiety that comes with that. But those problems fade as I gain more weight. Getting outside and moving, as well as meditating to rest my overly-analytical mind, are the remedy for my depression. Cannabis also helps.
And as for that particular herb, it also helps my eyes. I've been badly nearsighted since at least 9, was told I was pre-glaucoma, but my intra-ocular pressure has been reduced since I started smoking. And as much as I love reading, taking a break from books over the last year has noticeably improved my overall vision. Still pretty shitty, but I never thought it'd get better at all. Anything else....Well I've always had oily hair and skin, was forcibly medicated with dandruff shampoo and acne cream by my mom until I was 10, but everything cleared up since I stopped using soap. Still not good enough for her though because she thinks hair is supposed to be brittle and dry.
You all have way worse health problems than me, so your improvements are much greater than mine. I attribute my health to God's grace and starting early. I've been strongly anti-pharma since I was 11, my only "slip-up" was that round of vaccine for school, but no aspirin or antibiotics in a decade. Less time for toxins to build up, less disease to remedy down the road. Damn I hope that doesn't sound like victim-blaming though, I just got lucky and was bright for my age. Most 11 year olds simply don't have a clue or a care what goes in their body.