The Vitruvian Protocol

System VII of XI

Lymphatic & Immune

Lymph, nodes & defense

Why it matters

The immune system's failures show up as infection, and its excesses as inflammation and autoimmunity. Its best-proven upgrade is memory: training it in advance to recognize a pathogen. Rest also clearly affects how well it responds.

The protocol

Protocol 1

Stay current on recommended vaccines, and protect your sleep

Grade A · Strong evidence
How to do it
  • Follow your country's adult immunization schedule. For most adults this includes a yearly influenza vaccine, tetanus–diphtheria boosters every 10 years, and shingles and pneumococcal vaccines in later adulthood.
  • Keep a personal record of what you've received and when, and review it at each check-up.
  • Sleep 7 or more hours, especially in the days around vaccination and during infection season.
Why it works
Vaccines teach your immune system to make memory B and T cells against a specific pathogen, without the risk of the disease itself. Sleep supports the formation of those memory cells and antibodies.
The evidence
A meta-analysis of randomized trials found that influenza vaccination was associated with a 36% lower risk of major cardiovascular events in high-risk patients (RR 0.64)1. In a viral-challenge study, people who slept less than 6 hours a night were far more likely to develop a cold after exposure to rhinovirus than those sleeping more than 7 hours2.

What to measure

  • Vaccination recordUp to dateCheck against your national schedule each year.
  • Complete blood countIn rangeRoutine labs. Persistently abnormal white-cell counts deserve follow-up.
  • Infections per yearNotice the trendFrequent, severe or unusual infections warrant a clinical review.

Avoid

  • Smoking. It paralyzes the airway's protective cilia and blunts immune defenses.
  • Chronic sleep of less than 6 hours.
  • Heavy drinking, which suppresses both innate and adaptive immunity.

Sources

  1. Udell JA, Zawi R, Bhatt DL, et al. Association between influenza vaccination and cardiovascular outcomes in high-risk patients: a meta-analysis. JAMA. 2013;310(16):1711–1720. doi.org/10.1001/jama.2013.279206
  2. Prather AA, Janicki-Deverts D, Hall MH, Cohen S. Behaviorally assessed sleep and susceptibility to the common cold. Sleep. 2015;38(9):1353–1359. doi.org/10.5665/sleep.4968

Educational content, not medical advice. These protocols summarize published evidence for healthy adults; they are not a substitute for care from a clinician who knows your history. Check with one before starting a new exercise program, changing medication, or if you are pregnant or managing a medical condition.