Sleep Boosts Immune Cell Production

While you sleep, your body produces protective white blood cells like T-cells. These fight off bacteria and viruses, keeping you healthy.

Poor Sleep Lowers Cytokine Levels

Cytokines are proteins that control inflammation and fight infections. Lack of sleep reduces cytokine production, weakening immune response.

Sleep Deprivation Increases Infection Risk

Studies show that people who sleep less than 6 hours a night are more likely to catch colds and recover slower from illness.

Chronic Fatigue Leads to Inflammation

Consistent poor sleep raises cortisol (stress hormone) levels, causing chronic inflammation—making your immune system overworked and less effective.

Deep Sleep Helps Vaccines Work Better

Good-quality sleep improves how your body responds to vaccines by increasing antibody production and strengthening immune memory.