Restful Sleep Strengthens Immunity

Does sleep affect the immune system?

Yes. Sleep enhances immune memory, supports vaccine response, and reduces infection risk.

Explanation

During sleep, the immune system reorganizes and strengthens defenses. Cytokine production, T-cell activity, and antibody formation peak during deep and REM sleep. Sleep loss impairs these processes, increasing susceptibility to infections.

Studies show that people who sleep less than 6 hours per night are four times more likely to catch colds compared with those sleeping more than 7 hours. Sleep also improves vaccine efficacy, with well-rested individuals mounting stronger and longer-lasting immune responses.

Practical Emphasis: Prioritize sufficient, high-quality sleep during cold and flu season, before and after vaccinations, and during recovery from illness.

Takeaway (Action Tip)

Protect your immune system by ensuring 7–9 hours of quality sleep.

Reference

Sleep, 2015 – Sleep and susceptibility to the common cold

How Memorial Longevity Clinic Can Help

We monitor immune biomarkers and sleep quality, providing personalized interventions that strengthen immunity through better rest.

Disclaimer

The information provided on this page is for educational and informational purposes only and is not intended as medical advice. This content should not replace professional medical consultation, diagnosis, or treatment. Always seek the guidance of your physician or other qualified healthcare provider before making any changes to your health, lifestyle, or treatment plan.

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