A previous study showed a correlation between e-cigarette use and increased symptomatic dry eye and decreased tear film, theorizing that the propylene glycol used as solvent for the e-cigarette liquid produces free radicals which damage the lipid layer of the tear film by lipid peroxidation. In this study, e-cigarette users were found to have lower tear meniscus heights and tear breakup times, which were thought to be from deterioration of the lipid layer, but normal to elevated Schirmer testing indicated increased reflex tearing, the authors noted
You can often buy them from convenience stores
There are many different types of open system vaporizers, tanks, coils and eliquids
The movement began in 2005 when Needham, Massachusetts became the first town in the US to enact a law raising the MLSA to 21
If the air in your home is too dry, it can hurt your throat more
The monopoly also stated views on how Chinese officials should talk about the issue publicly