TheStory
A study followed a group of teenagers who had never smoked and tracked whether they took up smoking and how their mental healthchanged.
1. Researchers followed a group of teenagers who had never smoked.
2. They tracked whether the teenagers took up smoking.
3. They also tracked how their mental healthchanged.
After one year, the incidence of depression among those who had taken up smoking was four times as high as it was among those who hadnot.
The researchers tracked the teenagers
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