Short Wave Why Daylight Boosts Immunity
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May 30, 2025 Discover how your body's healing ability is influenced by the time of day, as research reveals that immune cells like neutrophils are more active during daylight. The science of circadian rhythms plays a crucial role in this process, illustrated through studies on baby zebrafish. Additionally, explore innovative advancements such as infrared contact lenses that allow users to see in color and a fascinating hawk that has adapted its hunting strategy to urban sounds. These topics showcase the intriguing connections between science and everyday life.
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Immune System Day-Night Cycle
- The immune system fights infections better during the day than at night due to circadian rhythms.
- Daytime immune responses cause inflammation; nighttime responses are anti-inflammatory for recovery.
Neutrophils Tell Time
- Even short-lived neutrophils have a built-in circadian clock to distinguish day from night.
- Neutrophils kill bacteria faster during the day due to this circadian awareness.
Manipulating Immune Timers
- Researchers aim to freeze neutrophils in their daytime state to boost infection-fighting.
- Modifying immune clock genes might lower inflammation for medical benefits.