LOL. I used to smoke 5-6 grams/day that I bought from a grower who had some of the best weed I ever smoked. Sometimes that top of my head would tingle. Nothing has ever knocked me on my ass and I could fix any computer problem regardless of how stoned I was. That was when I was in my early 40's. Now what I say next may sound like a pile of BS, but I can only tell you what I observed, and I tend to overthink, micro-analyze everything.
Most people start experiencing MS in their late 20's and early 30's. For me it did not start until I was in my early 50's, roughly a few years after I quit smoking. I decided when I was 50 it was time to grow up and quit smoking, everything. I really regret that and now I cannot shake the notion that letting my guard down gave MS a chance to get a foothold. Since my diagnosis I have spent many hours daily doing research. I sincerely believe I can CURE my MS with the right cocktail of CO. The cost to do what I want is beyond my reach for now, but my recent ventures into edibles seems to have kicked my into remission.
No doubt in my mind that if I could afford it I would still be smoking 25-30 joints a day. What can I say, I am a pot pig.