Can a walk in the park or a nature video boost your immune system?

NCT ID NCT05492006

Completed Knowledge-focused Sponsor: Hospital Israelita Albert Einstein Source: ClinicalTrials.gov ↗

First seen Jul 06, 2026 · Last updated Jul 07, 2026 · Updated 1 time

Summary

This study investigates whether intentional contact with nature (like a guided walk in a park) or indirect contact (watching nature videos) can improve immune markers and mood in adults aged 50 and older. Participants are randomly assigned to one of two nature experiences or a control group. Researchers measure changes in blood immune markers and emotional states over several weeks.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: nature contact (forest bathing and nature videos)
What this could lead to: If it works, this could point toward simple, accessible ways to boost immune function and mood in older adults.
What could go wrong: This is a small, early-stage study with only 54 participants. Results may not apply to everyone, and any immune changes might be temporary or not clinically meaningful.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

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Contacts and locations

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Locations

Hospital Israelita Albert Einstein

São Paulo, São Paulo, 05652000, Brazil

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