Why teenage girls in London face steeper depression rises than peers in Tokyo

Depression doesn't affect young people the same way everywhere. A new study tracking thousands of teenagers in London and Tokyo has uncovered striking differences in how depressive symptoms develop between the two cities—and the gap is especially pronounced for girls.

Researchers followed 7,100 young people across both capitals and found that while girls experience more depressive symptoms than boys in both places, the gender gap in London is roughly twice as large as in Tokyo. Even more concerning, depressive symptoms climb much faster year-on-year for teenage girls in London—about four times steeper than the increase seen among girls in Tokyo.

The findings raise important questions about what might be driving these differences and what we can learn from comparing experiences across cultures.

Two cities, different trajectories

Both London and Tokyo are dense, fast-paced urban environments where young people face academic pressure, social media exposure, and the ordinary challenges of adolescence. Yet the mental health outcomes for teenage girls in these cities are diverging in meaningful ways.

The study doesn't point to a single cause, but the scale of the difference suggests that cultural, social, or environmental factors unique to each city may be playing a role. It's not that girls in Tokyo aren't struggling—they are—but the rate at which symptoms worsen appears significantly lower than what researchers observed in London.

*Photo: Guohua Song · Pexels*

For researchers and clinicians, this kind of cross-cultural comparison is valuable because it highlights that depression isn't solely a biological or individual phenomenon. Context matters. The way a society is structured, how young people spend their time, the pressures they face, and the support available to them all shape mental health outcomes.

What might explain the gap

The study itself tracked symptoms over time but didn't drill into the underlying reasons for the disparity. Still, there are several areas worth considering.

Social media use and online culture vary between countries, and the UK has seen intense discussion in recent years about the mental health impact of platforms that encourage comparison and curated self-presentation. Cultural attitudes toward emotional expression also differ—some research suggests that British teens may experience or report distress differently than their Japanese counterparts, though this doesn't diminish the reality of what they're going through.

School systems, too, are structured differently. While both cities have demanding academic cultures, the rhythms of the school year, the nature of exams, and the social dynamics within schools aren't identical. Family structures, community support, and even the amount of green space available in a city can influence wellbeing in subtle but significant ways.

It's also possible that access to mental health support, or the willingness to seek it, varies. If young people in one city feel more isolated or less able to talk about what they're experiencing, symptoms may compound more quickly.

![teenage girl looking thoughtful

Why this matters

For anyone working in mental health, education, or youth support, studies like this are a reminder that we can't assume one-size-fits-all solutions. What works in one cultural context may not translate directly to another, and understanding these differences can help tailor interventions more effectively.

For podcasters and creators in the mental wellness space, the findings offer a chance to explore not just individual coping strategies but the broader environments that shape young people's mental health. Conversations about culture, community, and systemic support are just as important as discussions about therapy or self-care.

And for parents, teachers, and anyone who cares about the wellbeing of teenage girls, the research underscores that rising depression rates aren't inevitable. If the trajectory looks different in Tokyo than in London, it suggests there are levers we can pull—whether that's rethinking social norms, reshaping school environments, or creating more spaces where young people feel genuinely supported.

The study doesn't offer easy answers, but it does something equally valuable: it shows us that the patterns we see around us aren't fixed. Depression in young people is influenced by the world we build for them, and that means we have the ability to shape it differently.

Understanding why girls in one city face a steeper climb than those in another could be the first step toward levelling the path for everyone.

ScienceDaily *Photo: Chuot Anhls · Pexels* (https://www.sciencedaily.com/releases/2025/03/250318204110.htm)