The Science of Staying Well—The Definitive Guide to Caring for Your Immune System

Jenna Macciochi


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Your essential handbook to staying well in the modern world

The immune system is your constant guardian, fighting around the clock to protect you from disease. There’s a lot you can do to strengthen this first line of defense against all kinds of threats, from COVID-19 to cancer. Now, immunologist Dr. Jenna Macciochi gives us a crash course on how the immune system actually works—and how to keep yours in shape—with authoritative guidance on:

  • the best foods to eat to strengthen your immune system
  • the importance of movement, and how often to exercise
  • the essential link between immunity and sleep
  • its surprising connection to your mental health.


Jenna Macciochi:
Jenna Macciochi, PhD, has over twenty years of experience as a scientist researching the impact of lifestyle on the immune system in health and disease. She is on a mission to break down the science behind our health and share the secrets of how to be well, for good. Dr. Macciochi is a lecturer at Sussex University and a certified fitness instructor. Her writing has been featured in The Times (London), Women’s Health, Marie Claire, Glamour magazine, and Metro, among others. She is a mother of five-year-old twins and a keen home cook, creating recipes inspired by her farm-to-table Scottish roots and capturing her husband’s Italian heritage. She lives in Brighton, UK.