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How GPT-5 Thinking Mode Explains the Link Between Summer Humidity and Poor Health

Analysis of humidity and poor health in summer

Feeling Heavy This Summer? The Hidden Culprit May Be Humidity

We often focus on temperature when talking about summer heat.
But did you know that humidity plays a major role in how your body feels?

In recent years, summers have brought not only extreme heat but also persistently high humidity.
Many people report that “even if the temperature is the same as last year, this year feels worse.”

Here, we used GPT-5 Thinking Mode to combine weather data and health statistics to uncover the link between humidity and physical discomfort.

1. Data Selection

Thinking Mode excels at combining multiple datasets.
For this analysis, we used:

  • Japan Meteorological Agency → July–August average humidity (past 5 years, major cities)
  • WHO → Heat stroke risk levels in relation to humidity
  • Ministry of Health, Labour and Welfare → Heat stroke emergency transport statistics

2. Example Prompt for Thinking Mode

“Using JMA humidity data (July–August, last 5 years) and WHO’s heat stroke index, write an easy-to-understand blog post showing how higher humidity worsens health. Include evidence and end with daily preventive measures.”

3. GPT-5’s Reasoning Process

  1. Data Verification

    • Tokyo’s average July–August humidity: 72% in 2021 → 78% in 2025
    • Days with 80%+ humidity increased by ~1.5× in the last 5 years

  2. Knowledge Integration

    • High humidity reduces sweat evaporation → makes body temperature harder to regulate
    • Heat index (WBGT) rises sharply as humidity increases

  3. Conclusion

    • Even at the same temperature, higher humidity raises the risk of heat stroke
    • Fatigue, headaches, and general sluggishness are closely tied to humid conditions

4. Practical Tips for Daily Life

Thinking Mode translates insights into concrete advice:

  • Place a hygrometer indoors and dehumidify when levels exceed 70%
  • Check the WBGT index before outdoor activities
  • Follow the “1 glass of water per hour + salt” hydration rule

5. Impressions of GPT-5 Thinking Mode

What stands out is its ability to combine multi-layered reasoning with clear organization.
For complex topics like humidity and health, it creates a logical flow:

evidence → background → conclusion → practical advice

For bloggers and writers, this structured clarity can be a real asset.

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