Spice (JWH?)

I've been on probation for a month and a half now and I've been smoking copius amounts of spice.. almost as much as I smoked weed.
Is this shit awful for you? the past few weeks we've had stuff titled "mr. sticky" and "black king" which really fucks you up and it's 4 or 5 g's for 20 bucks..
They say it's damiana leaf on the label which I don't know anything about however it doesn't say "does not contain jwh" like all of the other garbage spice says nowadays so I'm just assuming it has jwh in it. So how bad is jwh health wise if anyone knows?

Officially it hasn't been out long enough to have any real studies done, but I can tell you from first hand that its pretty bad. I used to smoke jwh and since it became illegal in my state I've switched to the other "certified" synthetics but used to smoke it on a daily basis. The immediate effects are pretty obvious, my lungs felt like shit after a few days of smoking it and some occasional headaches, and it is fairly addictive or at least it was for me. Best thing I could tell you is limit the amount you smoke and how often you do and it'll help.

there is very little information on the side effects of jwh there is absolutle no reason to assume its safe, but the same can be said about its dangers.

I think there have been some deaths link to it, but most are from useing it while on anti depressants or other medication and since its a drug it shouldn't be mixed with medications obviously.
i have freind who have been smoking it for over a year now daily and there fine, for now.