Researchers in Finland surveyed teenagers aged 13–17 twice: in 2018 and again in 2023. They wanted to understand how teen fatigue levels changed over five years and what might be driving the change. The sample included over 5,500 adolescents, making this a substantial study, though it was conducted only in Finland.
What they discovered is striking: fatigue among teenage girls surged by nearly 50%, while boys' fatigue levels stayed largely unchanged. This gender gap suggests something specific is affecting girls' energy and wellbeing during these years.
Fatigue signals deeper emotional strain
The study found that persistent tiredness is closely linked to mental health struggles. Teens experiencing anxiety, worry, and sadness—what researchers call "internalizing problems"—reported significantly higher fatigue. Teens with behavioural or emotional outbursts also showed elevated fatigue levels.
Think of fatigue as a physical message from your teen's body. When adolescents carry stress and worry, their minds and bodies work continuously in overdrive, burning through energy reserves. This creates a cycle: stress triggers fatigue, and fatigue makes it harder to manage stress.
Why Singapore teens may be at particular risk
Singapore's education system is academically competitive, and many teens juggle school, tuition, co-curricular activities, and high family expectations simultaneously. The pandemic compounded this with disrupted routines and social isolation. The Finnish research suggests girls may be more vulnerable to fatigue in response to these pressures, possibly because they tend to internalize stress silently rather than express it outwardly.
The study also identified other risk factors: teens living with one biological parent and those carrying extra weight reported higher fatigue levels. This reminds us that tiredness isn't a personal weakness—family circumstances and overall health significantly influence energy levels.
How to respond when your teen is always tired
- Don't assume laziness. Take tiredness seriously by asking gentle questions about school worries, friendships, and what's bothering them emotionally.
- Notice the mood connection. If fatigue persists alongside anxiety, withdrawal, or mood changes, consider whether your teen needs support from a school counselor or mental health professional.
- Look at the bigger picture. Assess whether your teen's schedule, sleep quality, and stress load are sustainable, especially during exam periods.