Research · · 1 min read
What research says about forest bathing
Studies on stress, mood and the immune system: an honest overview of what we know and what remains open.
Forest bathing is often promoted with big promises. Looking at the research is worthwhile precisely because it is more nuanced.
What studies suggest
- Stress: Japanese field studies (e.g. Park et al., 2010) found lower average cortisol levels and a calmer heart rate after time in the forest than after comparable time in the city.
- Mood and rumination: Bratman et al. (2015) observed that a 90-minute walk in nature reduced rumination more than a walk along a road.
- Immune system: Li (2010) reported increased natural killer cell activity after forest stays. The studies were small; the results are promising but not established.
- How much nature: White et al. (2019) found that people who spend at least around 120 minutes a week in nature more often report good health and wellbeing.
The limits
Many studies have few participants, short observation periods or no blinding. People who enjoy the forest may simply be more relaxed to begin with. That is why I speak of indications, not healing effects.
What this means for you
You don't need to wait for the perfect study to give yourself time in the forest. Take the research as encouragement, not as a promise.
Would you like to experience the forest yourself?
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