Quote: I read somewhere that the potency is 100 times greater because of the additional chemicals which is creating increasing mental illness.
You need to review where you get your facts from Mantra, what you posted is plainly untrue, and the fact that some people may believe it, does not alter the fact that it is just a lie.
The deception that whoever originally put forward the 100 times stronger line of BS will be in comparing the old hemp style of plant that was bred for making ropes and stuff in the old days, with current marijuana grown for smoking, which amounts to saying you will get more stoned smoking a joint than a front door mat, which is not really a major revelation.
That being said, they are breeding strains of marijuana to have higher content of differing "naturally" occuring chemicals that are present in marijuana, to produce different types of highs, and yes some strains are significantly stronger than some that were commonly available when you were a lassie, but as someone who was a pretty refined grower in my early days, I can tell you that we could grow very strong dope back then too.
As far as association to mental illness, I believe pot may exacerbate some pre-existing conditions, but I reamain unconvinced that it actually causes these conditions on it's own.
These days we see almost everyone as being able to be diagnosed with a mental condition if that is aim of the particular researcher.
I think one just needs to see how every unwanted behaviour display is attributed to a metal condition blamed on everything from peanut butter to petroleum, to realise that the same warnings given about marijuana could be applied to so very many other products we consume.