New Study Shows Cancer and Other Health Risks of Nicotine itself - “One of the most toxic and fast acting poisons”
https://pmc.ncbi.nlm.nih.gov/articles/PMC4363846/
I've noticed a recurring discussion among this subreddit's members about the health risks of nicotine delivery mechanisms vs nicotine itself. It's easy to blame dip or pouches or e-cigarettes or whatever else for side effects, but according to this study, the chemical nicotine is a highly potent poison that causes health problems from cancer to respiratory issues to renal problems.
This isn't a long read, and health issues are categorized in their own sections for you to scroll to.
To anyone wondering 'why does my nicotine product cause this odd and random side effect' - I hope this answers your question. It did for me with regards to my heart rate and breathing difficulties when I used Zyn.
By the way, I am 174 days nicotine free and never felt better, baby!
Edit: spelling