What They Didn't Say

Oxidative and pro-inflammatory impact of regular and denicotinized cigarettes on blood brain barrier endothelial cells

In summary, our results indicate that nicotine free and ultralow nicotine cigarettes are potentially more harmful to the BBB endothelium than regular tobacco products. In addition, this study demonstrates that the tobacco smoke induced toxicity at BBB endothelium cells is strongly correlated to the TAR and Nitric Oxide levels in the cigarettes rather than the Nicotine content.

It also very strongly suggests that NICOTINE IS PROTECTIVE AGAINST THAT DAMAGE.