Our bodies are pretty amazing and as with all the systems that we embody, the immune system is mind-blowing. The reason for me to pick this book is the ongoing CoViD-19 pandemic and to have a basic understanding of how the immune system works. I knew the functions of the immune system at a broader level and wanted to understand the intricacies of it. This book provides a great biological explainer of it for beginners.
The book starts off with the different cells involved in the immune system and how they communicate with each other when there is an intruder in the body. Be aware that it can get a little technical here. I found it a little hard to remember all the terminologies related to the cells' functions. The book has some neat illustrations on different types of antibodies, how T cells (one of the important cells to instigate an inflammatory response) understand there is an intruder and how they communicate with B cells to produce antibodies. I got a basic understanding of the different types of immunity - innate and adaptive.
Apart from the basic biology of how the system works, the book also talks about vaccinations and how they mount an immune response in the body. The author discusses examples of various vaccines that are already available and goes on to explain why it is difficult to make vaccines for diseases like HIV and malaria. There is also a chapter on cancer and how our immune systems despite being so vigilant and clever, fail to detect it. The most interesting part of the book for me was the topic of autoimmune diseases. The author made a great attempt in explaining how our immune systems can go on an overdrive and attack itself. This kind of autoimmune response can lead to conditions like allergy and asthma to more serious disorders like Type-1 diabetes and lupus. The next most interesting topic was organ transplants and why our bodies reject it. It is again the immune system, which has learned through millions of years of evolution to protect us by detecting pathogens and attacking them, now encountering the 60-year old medical marvel of an organ transplant, detects it as an outsider and attacks the newcomer, producing a similar response to when we are attacked by any pathogen. The book ends with bioterrorism where the author discusses the past accounts of misuse of microbes to spread diseases during a war. This was a little spooky, given the current pandemic. Although, on a side note, it is time and again shown by scientists that CoViD-19 is NOT a bio-weapon!
I liked this book overall and might go back to it to refer the topics again. It took some time for me to connect the dots and form an overall picture of the immune response. I felt a little disengaged at a few places where the author mentions a new terminology and refers it to be discussed in a future chapter which made it difficult for me to go back and forth. Despite the few caveats, I recommend this to anyone who is intrigued about the workings of the human body in general or to anyone who wants to understand the intricacies of the immune system.