when were cigarettes considered healthy Throwback Thursday: Doctors Prescribed 'Healthy' Cigarette Brands I Just Found This Amazing

Others, while perhaps requiring disclosure of conflict of interest, say that the research should be based on the data itself, not the source

[DOI] [PubMed] [Google Scholar] Shiffman S, Johnston JA, Khayrallah M, Elash CA, Gwaltney CJ, Paty JA, Gnys M, Evoniuk G, DeVeaugh-Geiss J

For instance, security authorities at German airports have classified Zippo lighters as potentially dangerous and may prohibit them

Cardiovascular strain and common side effects MedlinePlus notes that nicotine replacement therapy can raise heart rate and blood pressure, and that side effects are more likely with higher doses (including headaches, nausea, digestive issues, and sleep disturbances)