I'm 19, and 4 months ago I experienced a panic attack; induced by smoking marijuana and anxious thoughts prior. It was a terrifying situation, I convinced myself that I was dying, and I believe this event alone has sunk a deep hole in my mind subconsciously always thinking that i'm dying.
Every time I smoke now, I bad trip. I'm struggling with this new disorder i've obtained, my main concern is my breathing (sob) . I wish I could take my own advice better, but honestly the best thing to do is not to think about it.
It all started with myself worrying about my throat, and lungs. I went to the emergency a few times thinking something was seriously wrong. I even got an endoscopy not too long ago! ( they put a camera through my nose, down to my throat ) and also took a blood test, I was convinced that I was hyperthyroid. Now that several diagnostics have gone underway, I became fixated on my heart, and since a week or so, I find myself gravely worrying about my breathing and mental health. It's a vicious cycle when you begin worrying about any slight little imperfection.
As to the hemp plant.. I'm probably more educated about this field than the doctor and it's not the hemp plant that caused this. I however, don't smoke any more since I guess i've cognitively reinforced the notion that weed will bring a panic attack. It's all in your head, but with the complexities of the nervous system, that alone is real enough.
Keep informed, good luck buddy.