Scientists Tracked Children for Decades—One Factor Was Linked to Depression
Summary
A study found that children and teenagers with better fitness, especially cardiorespiratory fitness, had a lower risk of depression as adults. Researchers studied over 1,000 Australians for more than 30 years to see how childhood fitness relates to adult mental health.Key Facts
- The study tracked more than 1,000 Australian children from ages 7-15 in 1985 to ages 36-49 about 30 years later.
- Fitness was measured using tests like a 1.6-kilometer run, standing long jump, and cycling.
- A higher cardiorespiratory fitness level in youth was linked to a 13% lower chance of depression in adulthood.
- Cardiorespiratory fitness means exercise that makes you breathe harder, like running or cycling.
- The link between fitness and lower depression risk was stronger in females.
- This is an observational study, so it shows a connection but does not prove that low fitness causes depression.
- Possible reasons for the link include better immune function, lower inflammation, improved hormone balance, and brain benefits from exercise.
- Other factors like family income, home environment, and early mental health might also affect both fitness and depression risk.
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