While conditions will vary greatly depending on your location and time of year, we recommend you replace the cartridge every 6 months to a year in places were pollen or allergens are not high
Some things to consider when looking at hypnotherapy for quitting smoking include safety, efficacy, cost, length of treatment, quality of services, and whether or not it will work for a specific individuals personality or physiology
These results (and corresponding diagrams) indicate the variability in relative risk in each smoking group across studies, but they do not directly reflect the within study correlation between risk and consumption (as in the first and second analyses above)
Yeh HC, Duncan BB, Schmidt MI, Wang NY, Brancati FL