For colitis, it doesn't seem to simply be the nicotine as studies using nicotine patches saw little or no effect. This suggests the smoke itself may have some e

For colitis, it doesn't seem to simply be the nicotine as studies using nicotine patches saw little or no effect. This suggests the smoke itself may have some effect. There is a summary at https://www.crohnsandcolitis.org.uk/about-crohns-and-colitis/publications/smoking-and-ibd https://www.crohnsandcolitis.org.uk/about-crohns-and-colitis....