do cigarettes help hangovers Another reason not to light up: Smoking makes a hangover worse The Dangerous Effect of Mixing

But in suggesting that there is a neurophysiological basis for the observation that nicotine use can increase the reinforcing properties of alcohol, it may also underscore that tobaccos harms may extend well beyond cancer and heart disease, and that the toll it has taken may go well beyond the 100 million people it is estimated to have killed in the 20th century alone.

Yes, quitting nicotine is generally harder due to its highly addictive nature and severe withdrawal symptoms

There we go

Its effectiveness might partly be explained by the fact that e-cigs satiate both the addiction to nicotine and the behavioral aspect of smoking such as the actual hand-to-mouth movements

Cold turkey discontinuation produces the most intense withdrawal symptoms, carries the highest risk of relapse, and provides no clinical buffer for the neurological adjustment the brain must undergo after long-term buprenorphine use