James' World 2

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In his new book, The Unseen Body, Dr. Jonathan Reisman offers a guided tour inside the human body, from the remarkable design of our organs to the messages contained in our body fluids.

TERRY GROSS, HOST:

This is FRESH AIR. I’m Terry Gross. We’re going to talk about the hidden world inside our bodies, the remarkable design of our organs, the messages contained in our body fluids, and how things can turn foul when something goes wrong. My guest, Dr. Jonathan Reisman, is an internist, pediatrician, and ER physician, and the author of the new book, “The Unseen Body.” Each chapter is about a specific body part or body fluid from his perspective as a doctor. So there’s chapters on the throat, heart, feces, genitals, liver, brain, skin, urine, blood, and so on. It’s fascinating material, but I want to acknowledge at the start that our conversation will include discussion of body fluids and genitals. And I know that makes some people uncomfortable or squeamish. I suspect Dr. Reisman will try to convince you that you needn’t be squeamish about the complexity of the human body.

Before studying medicine, his passion was studying the natural world and ecology. As a medical student, he found that exploring the body felt similar to exploring the outside world. Each organ was a different creature with its own unique appearance and behaviors. He’s practiced medicine in remote and culturally unique regions of the world, including the Arctic, Antarctica, high altitudes in Nepal, people living on the street in Calcutta, in India, and among the Oglala Sioux in South Dakota. He currently works in several ERs in the Philadelphia area.

Dr. Jonathan Reisman, welcome to FRESH AIR. It’s a fascinating book. I know you’re fascinated by our insides, our organs, our body fluids. It’s part of what drew you to medicine. But many people are squeamish about looking even at a video of a chest cut open during surgery. Why do you think that the body can seem so revolting or upsetting?

JONATHAN REISMAN: Well, thanks so much for having me here today, Terry. I think that a lot of people are simply, you know, grossed out or repulsed by what they’re not used to. You know, when we go about our daily lives, we don’t see the body’s innards. We don’t see our internal organs. And we try to do our best to try not to see the, you know, the excreted bodily fluids that come out of us too. Just our normal daily life does not involve seeing those deeper parts of the body. And part of the reason I named my book “The Unseen Body” is because I’m trying to open up, you know, that unseen portion of the body that we all don’t see in our daily lives, pull back the curtain, if you will, on how all the organs work, how fascinating they are, but also how they impact every aspect of our lives from daily life and, you know, all the milestones of our lives from birth to death and beyond.

GROSS: The first time you could open a cadaver as a medical student, did you find it revolting or fascinating?

REISMAN: I actually found it absolutely fascinating on that first day. In fact, before the end of the very first day of medical school, during which they had us start in the anatomy lab, which is the class in which we would dissect the cadaver over the coming months, before the end of the very first day of medical school, I decided that, when I died, I would want to donate my body for the same medical school dissection, you know, the same thing that was happening between me and the three other medical students that shared this cadaver, you know, kind of exploring its innards and sort of seeing what’s inside this strange man that we never knew in life. And, you know, as an extension, when you look inside the body of another person, you’re necessarily looking inside your own, seeing how you are built, how organs are, you know, organized inside of you. And so it kind of takes on this very self-reflective and philosophical nature. And I was really taken with that from Day 1 and resolved – and I’m still sticking to it – when I die, I want to donate my body for medical student dissection.

GROSS: Well, let’s start talking about a part of the body that does not make people squeamish. I’m thinking of the throat. When you were in med school, you were amazed at how stupidly designed the throat seemed. What seemed stupid about it?

REISMAN: You know, what is its basic function? The throat helps us deal with whatever enters our body, you know, usually through the mouth. We drink. We eat. We inhale. Air comes in through the mouth and the nose. All of it ends up in the throat. And it’s the throat’s very, very important job to deal with all of it. Specifically, the throat has to take food, drink saliva, other things that we mean to swallow and make sure they go into the one tube, the esophagus, the food tube, which goes down to the stomach. The tube right next to the esophagus, literally millimeters away, is the windpipe, which goes down to the lungs. And every single time something passes through the throat, its most important job is to make sure that that – whatever it is besides air does not go down the windpipe.

This – the design seemed fairly stupid to me because if you mess up just once, if you try to talk while swallowing just once or laugh with your mouth full, as we all know, sadly, you know, you can aspirate, choke and die just from one little slip up. So it seemed sort of silly to have these two tubes right next to each other. And every time we swallow food and drink or every time we thoughtlessly swallow our own saliva, which happens basically all day, every day of our lives, that material comes within a few millimeters of slipping into the windpipe, therefore a few millimeters within killing us.

And so it seemed like such a really poor design. Like, maybe food and drink and air could enter the body through different orifices. Of course, it can’t because of how we form in the womb. But it seems like a big problem that can cause a lot of trouble, and especially in contrast to other parts of the body, which seemed so exquisitely designed, so brilliantly constructed to keep us alive, to ensure our survival. The throat almost seemed like a really easy way to die.

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The human body

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