Synthetic weed may cause heart attacks, but it's tough to banRobbie Gonzalez7/18/12 1:25pmFiled to: Holy crap wtfCannabisSynthetic weedpharmacologyHealthMedicineSynthetic potSynthetic marijuanaScienceSciDeathTexasHeart Attack311EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkSpice, Blaze, K2, Red X Dawn. Any of them sound familiar? They're different brands of synthetic pot — psychoactive drugs (commonly marketed in head shops as incense) which contain chemicals that, much like the THC in marijuana, act on the cannabinoid receptors in your brain. Sounds peachy, right? There's a catch. Unlike pot, which is known to increase heart rate but is otherwise rarely linked to heart problems, the synthetic stuff appears to be leading to heart attacks, most recently in three Texas teenagers.