I've worked with people with psych issues too and there are people that even one cup of coffee, the caffeine can put them in a very bad place. Any mood altering substance can bring out latent psych problems. And as was pointed out some people progressively fry their brains until the next toke or snort or energy drink sends them over the edge.
Gah, did you ever see anybody on 4Loco? I'd criminalize energy drinks, they pulled that stuff but it creates a tweaky drunk...what fun
This is how I feel as well!
It's like someone asking me for a fruit recommendation- if I say "go eat strawberries" and they have an allergic reaction, it's not a normal occurance. I'm not going to say "well, you MAY end up with a rash or issues breathing," since it's not a typical thing that happens.
A friend of mine in high school ended up in the hospital and almost died from eating Chick-fil-a, since their chicken is cooked in peanut oil.
I'm allergic to grapes and walnuts... and Echinacea, which is in a lot of cold preventation meds. It makes me shake.
Advil messes with my asthma. More than 1 cup of coffee in a row makes me jittery and nervous. Those 5 hour energy drinks make me feel like I want to crawl out of my skin- and they make me look sunburnt until they get out of my system!
Basically, what I'm saying, is that there are MANY "normal" things that cause weird and deadly reactions and behaviors. I know people who can live on 5 hour energy, and I can't even handle 1/2 a bottle of it!
As with ANY mood altering substance (alcohol, caffeine, weed, etc) moderation really is key. Just as you shouldn't smoke 5 joints in a day, you also shouldn't have 5 cups of coffee or 5 drinks a day!
With weed, I think the benefits outweigh the negatives. It's been proven to have many good effects on people.