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Blink 3 of 8 - The 5 AM Club
by Robin Sharma
The Extraordinary New Science of the Immune System: A Tale in Four Lives
Imagine a huge party – a massive, rip-roaring carnival with hundreds of billions of attendees. Where is this wild, gargantuan bash with a guest list well over a hundred times larger than Earth’s human population?
It’s inside you. The merrymakers are your own cells, as well as billions of bacteria and viruses. This party is what the author calls the Festival of Life.
At this festival, making sure everything runs smoothly, are janitors and handymen, security personnel and emergency responders – the cells that constitute your immune system. They are your body’s elegant defense. They attend to tissue damage and clean up toxins. And they fight off malicious intruders known as pathogens.
Pathogens are disease-causing agents, and they come in three main forms: bacteria, viruses and parasites. For the purposes of these blinks, we’ll be focusing only on the first two.
In their most dangerous forms, you can think of them as tiny little killers. They’re small – really small. You can fit a few thousand bacteria inside one human cell. Viruses are even smaller. A few thousand would fit inside a single bacterium.
But a quick caveat: though some bacteria and viruses are pathogenic, most aren’t. In fact, a mere one percent of all bacteria are likely to cause illness. And as for viruses, some of them are crucial to our survival. For instance, about eight percent of our genetic material was created by retroviruses, a special variety of virus that invades human cells and literally becomes part of our DNA.
So viruses and bacteria aren’t inherently bad – far from it. But a handful of them are deadly indeed.
Just take the bacterium known as Yersinia pestis. It’s responsible for causing the Black Plague, which killed upward of 30 percent of Europe’s population in the fourteenth century. Some other nasty bacteria include salmonella, E. coli and tetanus bacillus, while the long list of deadly viruses includes Ebola, HIV, smallpox, flu and rabies.
Prior to 1900, influenza (a viral infection) and pneumonia (an inflammation that can be viral or bacterial) were major killers, responsible for more deaths out of every 100,000 patients than any other disease. Compared with these earlier numbers, the current death rate is extremely low.
How did we beat back these pathogens? Well, you’re going to get the long answer, which is the story of the discovery of the immune system.
An Elegant Defense (2019) is an erudite and approachable exploration of the immune system. Using the difficult story of a dear friend as a starting point, author Matt Richtel leads the reader through a mind-boggling tour of one of the world’s most complex systems – what he calls our “elegant defense.”
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Start your free trialBlink 3 of 8 - The 5 AM Club
by Robin Sharma