YMMV / Teenage Worrier

• Diagnosed by the Audience: Zelda, a girl in Letty's class at school, appears to have some kind of autism or learning disability (severe enough that she has a carer), although it's not stated what her condition is.
• Hollywood Homely: Despite complaining about her acne and flat chest, Letty is frequently described as tall and thin, and has no shortage of male admirers.
• Values Dissonance: Comes up several times due to the book being set in the 1990s.
  • An ongoing storyline over the books is Hazel being afraid to come out as a lesbian to her parents — ultimately driving her to run away from home. Increased social acceptance of LGBT people makes such an outcome less likely today, since Hazel's parents are described as strict but not homophobic.
  • It's mentioned that Letty enjoyed football in primary school, but after moving up to high school, she was no longer allowed to play. At the time of publication in the early 1990s, this was common practice in British schools. In the mid-2000s, a reprint of the book changed it to her simply being discouraged from playing football; but nowadays, most schools would have a girls' team or at least encourage the girls to use local facilities.
  • Letty's parents being neglectful and absent-minded is Played for Laughs. They smoke and get drunk in the house, do not bother to cook or buy groceries, and are rarely at home — often leaving Letty to take care of Benjy. In more recent years, this would be seen as borderline inappropriate even for comedy.
  • Today, 15-year-old Letty dating 22-year-old Basil would be seen as highly problematic. She initially doesn't know his age and thinks he is around 18, but it would still be unlikely for her parents or friends not to intervene. Similarly, when Hazel's girlfriend leaves her for a twenty-something woman, Letty and Aggy don't think anything of it and are just sympathetic that Hazel got dumped.
  • In The Teenage Worrier's Worry Files, Letty gets drunk at a party and then misses her period. She becomes worried that she slept with Junior and is now pregnant. Today, it's apparent that this would have been date rape, as Letty was too drunk to consent (although she ultimately discovers nothing happened.)
  • Letty's comments about Aggy's weight come across as rather fat-shaming to a modern reader, even though they're meant affectionately.