Fact
Evidence suggests nicotine delivered via e-cigarettes may have the same negative physiological effects that are observed with combustible cigarettes use.
Source 1:
Effects of electronic nicotine delivery systems and cigarettes on systemic circulation and blood-brain barrier. Nathan A. Heldt, Nancy Reichenbach, Hannah M. McGary, Yuri Persidsky
https://ajp.amjpathol.org/article/S0002-9440(20)30509-5/fulltext