July 16, 2025

Daylight: Your Secret Weapon for Immunity - AI Podcast

8 minutes

Story at-a-glance

Your immune system's frontline defenders, called neutrophils, are most powerful in the early morning when activated by daylight exposure
Light works like an internal alarm, switching your immune response on at the right time and boosting your body's ability to fight infection
When you stay up late, miss morning sunlight or get too much artificial light at night, your immune rhythm falls out of sync, leaving you more vulnerable
Research shows that your immune system is not only reactive but timed, meaning when you're exposed to pathogens matters as much as how your body fights them
Simple changes, like getting outside in the morning and limiting screen use before bed, reprogram your immune system to respond faster and more effectively

...more

By Dr. Mercola

4.6

14871,487 ratings

July 16, 2025

8 minutes

Story at-a-glance

Your immune system's frontline defenders, called neutrophils, are most powerful in the early morning when activated by daylight exposure
Light works like an internal alarm, switching your immune response on at the right time and boosting your body's ability to fight infection
When you stay up late, miss morning sunlight or get too much artificial light at night, your immune rhythm falls out of sync, leaving you more vulnerable
Research shows that your immune system is not only reactive but timed, meaning when you're exposed to pathogens matters as much as how your body fights them
Simple changes, like getting outside in the morning and limiting screen use before bed, reprogram your immune system to respond faster and more effectively

...more