Well I said I really didn't know, and was going solely by what I could see on someone else....And anyway just alcohol by itself could cause all that...
As for the weed being more potent, I know, I still use it, all that means is you need less of it to get the same effect. BUT keep in mind depending on what the point in using it is - you might not really want high THC content..THC is the ingredient that is useful for, well - intoxication, pain control, appetite stimulant, eye pressure reduction, TBC (actually it counter-acts THC) is better for stuff like seizures, and nausea. So in general if you are going to use it - yes it's best to pick out a strain that best fits what it is you wish to accomplish with it.
Not sure I totally agree with the deal on mental health issues either, well, no more so than any other drug might anyway...I guess I can see it might worsen things if there is an issue to start with though, in some cases...
But for me that stuff really dose feel like a gift from God...It helps my pain greatly without feels like someone is looking over my shoulder all the time, and without feeling nervous just because the supply is running low - and God forbid it hurts every day for some time (I have had that for months straight) - no noticeable withdraw when it's not needed - there are a handful of time when that alone will not get rid of it totally, but even then it helps enough not to need much more.
It also seems to help other issue that "traditional" medications have caused all kinds of issues with, but it at least temporarily help with the symptoms, perhaps not as long as tradition medications would, but even so, without the unpleasant effects, so...