Alpha-Tocopherol, Beta Carotene Cancer Prevention Study Group.The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers
These wrinkles are more apparent around the lips and eyes and tobacco also makes skin leathery and dry
Bundgaard, T., Wildt, J., Frydenberg, M., Elbrond, O
There are trace components of tobacco-specific nitrosamines and things that are harmful, but it's still much, much lower than chewing tobacco, for example
"Nicotine withdrawal symptoms include irritability, anxiety, difficulty concentrating, and strong cravings." Centers for Disease Control and Prevention Triggers like stress, boredom, or routine can activate cravings instantly