The debate rages on. Do e-cigs actually help people quit smoking? A new study says yes. E-cigarettes are now used by over 9 million Americans and the new study goes against previous studies which suggest that using e-cigarettes actually make it harder to quit. The study found that around 8% of smokers who used e-cigarettes who tried to quit were successful, compared to only around 5% of non-users. I found that quitting cold turkey back in 1993 worked for me.