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Smoking might indirectly influence estrogen levels due to its impact on overall hormone regulation, but nicotine itself isnt known to increase estrogen directly

2.4 Data analysis We generated frequency and percentage distributions to describe the survey data

Writing on the e-cigarette research website, the Greek cardiologist Konstantinos Farsalinos said the offending device tested by Kunugita was a single extreme case out of the many products he tested, adding that the high formaldehyde reading may have been caused by several factors, including a faulty e-cigarette

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