How Immunity Works: And What It Means for Cancer, Allergy, Diabetes, and More

Your immune system is working for you every minute of every day—but how much do you really know about it?

This clear, practical, and accessible guide offers a complete exploration of how the immune system protects you, adapts to challenges, and sometimes falters. Whether you are managing a health condition such as cancer, diabetes, or allergies, or simply want to understand your body better, How Immunity Works will help you feel informed, empowered, and more connected to your own wellbeing.

What you’ll learn:

• The different components of the immune system and how they work together

• How immunity changes through life—from infancy to older age

• The role of inflammation, autoimmune disease, and allergy

• How lifestyle factors like stress, nutrition, sleep, and movement influence immune health

• What science says about immune support, from vaccines to the microbiome

• How the environment, trauma, and emotional health shape immunity

• What you can do—practically and realistically—to build immune resilience every day

Written in an engaging, easy-to-follow style by Dr Shara Cohen, founder of Cancer Care Parcel, this book blends scientific insight with lived experience. It avoids medical jargon and offers encouragement without hype, giving you a reliable foundation for understanding one of the body’s most vital systems.