In the season 1 episode "Duggar Dating Rules", the Duggars explain their beliefs about what to do and not do in dating/courtship. This includes talk of premarital sex (though not graphic).

In season 5, episode 28 ("Duggar In Danger"), 11-year-old Jason accidently falls into a 12-foot orchestra pit. His front teeth are broken and his face is bloody. This is the worst accident that happens in the series.

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The episode where Jason falls can be a scary moment.