Essentially, the hormones from the active pills keep your ovaries in a resting state, so theres no egg released to be fertilized
There are safer, more powerful approaches
Current analytical tools and challenges in the chemical characterization from e-cigarettes Organic matter characterization: Various analytical techniques are required to comprehensively characterize electronic cigarettes, as shown in Figure 3
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It is the same principle as 50 years ago: the filter-less blonde cigarette was invented to replace the brown one, but a Kalashnikov and a pistol have something in common, they both kill. I guess that in this case, we really have to wait for more objective research to find out if the IQOS is better than cigarettes.
Cotinine can be detected in hair for 1 to 3 months after use