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1918 Camp Brooks Sun Experiment
- In 1918 Camp Brooks moved influenza patients outdoors and cut the death rate by two-thirds.
- Staff observed patients' temperatures and comfort improved rapidly after exposure to fresh air and sunlight.
Sunlight Powers Our Internal Vitamin D
- Human skin synthesizes vitamin D when UVB from sunlight breaks a bond in a cholesterol precursor and the molecule is processed by liver and kidneys.
- Vitamin D then modulates immunity, affecting macrophage activity and inflammatory responses.
Vitamin D Correlates With COVID Severity
- Multiple teams observed correlations between low vitamin D levels and severe COVID-19 outcomes in patients and across countries.
- Vitamin D appears to both boost pathogen-killing macrophages and reduce damaging cytokine storms.