Scientific studies have proven that marijuana smoke has most cancers-causing hydrocarbons and is an irritant for the lungs. Marijuana users often inhale much more deeply and hold their breath extended than tobacco smokers do, which additional raises lung exposure towards the smoke. 知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 It can be difficult to https://helpmehigh.com/