World Aspergers' Organization

Yes, it's true. I had a similar experience after a sports injury. At the time, I was still smoking, and the doctors kept telling me that my recovery was very slow. When I started looking for facts, I found https://ways2well.com/blog/smoking-and-stem-cell-therapy-how-smoking-affects-healing-and-results . It explains very clearly how smoking damages not only the lungs but also the ability of cells to regenerate, which directly affects the speed of tissue healing after injury. I had no idea how serious it was: insufficient oxygen supply, circulatory disorders, reduced immune response — all of this slows down the process.