Nonfiction Book Reviews

Okay, all of you germophobes, you can’t leave yet!! Why Dirt is Good: 5 Ways to Make Germs Your Friends by Mary Ruebush is especially important reading for the Clorox Sanitizing Wipes/Purell gel sanitizer type people, which germophobes usually are.  Yeah, you know who you are.

Why Dirt is Good was written by a doctor who is a microbiology and immunology instructor at Kaplan Medical and has taught about immunology, infectious disease, and pathology in medical schools for 30+ years.  So she isn’t some quack who is spouting of her own ideas of what she thinks we ought to do - she has years and years of experience backing her (and her admittedly insane ideas).

So here’s the book in a nutshell:

Our immune system is like anything else - it gets better and stronger the more it is used.  An immune system has to learn how to fight off bugs, and it has to do it regularly to stay in good shape (just like an Olympic gold medalist couldn’t take off an entire year from training and then still compete in an event.)  When a child is not exposed to dirt and germs at a young age, then the immune system doesn’t learn how to fight the viruses and bacteria, and the child will actually be more prone to illnesses when they get older than a child who was exposed to a lot of dirt n’ germs.

In other words, those parents who are clean freaks who sterilize everything that goes into their child’s mouth in order to “keep them from getting sick” is setting that child up for a lifetime of sickness.  Ironic, is it not?

But having said that, this doesn’t mean that the author was advocating that you have your child never wash their hands or send your child outside with specific instructions to eat a cup of dirt every day, but she was saying that you as the parent should not freak out when your child does the things that children do (eat mud pies, eat food dropped on the floor, share their food with others, etc).  Don’t sterilize the binky/pacifier every time it drops on the ground.  Wipe it off on your pants and plug it back in!  Your child will thank you later.

Ruebush also spent a lot of time talking about the anti-bacterial and anti-microbial hand sanitizers that you see all over the place.  She said something that probably won’t be trumpeted in the next Purell ad you see on TV: These sanitizers work really well in the laboratory but have shown virtually zero effect in real life.

From page 111:

The primary ingredient in the hundreds of liquid antibacterial soaps on the market today is triclosan.  In much higher concentrations, triclosan is used in hospital settings - by surgeons scrubbing before an operation, for example.  At those concentrations and in that setting, triclosan kills bacteria across the board.  At the much lower concentrations in soap made for the consumer use (usually 0.15 percent), the amount of triclosan is just right for creating resistance to it.

What the story there is: Bacteria and viruses are some of the best organisms at evolving out of anything residing on this planet.  They can literally evolve within a couple of hours.  You cannot possibly keep ahead of them by producing a new anti-bacterial in the lab every time something evolves.

And the bacteria do it by adapting to the agents trying to kill them.  There is the phrase, “Whatever doesn’t kill you makes you stronger,” right?  Well, that phrase is absolutely applicable to bacteria.  When you use a low level anti-bacteria on bacteria, it kills off the weak strains of bacteria and leaves the more advanced and potentially deadlier bacteria alive, and now resistant to whatever it was that you used to try to kill it.  The more you use anti-bacterial soap, the more deadly the bacteria gets, and the less effective that soap is.

Seriously, it’s just frustrating isn’t it?

To find out lots more than you ever really wanted to know about bacteria and viruses, you need to read Why Dirt is Good.  It opened my eyes to a lot of things that I had thought I had known but now know is false.

Well, now for the negatives.  The margins are huge, and the book is short (roughly 170 pages without counting the glossary at the back) so there really isn’t much to it.  At times, it felt like an overblown magazine article, where the author just tried to take a topic and stretch it out as far as possible.  There were some things that were repeated too much in my ever so humble opinion.

If they had shrunk the margins down to normal size, resized the dimensions of the book itself into the “normal” (and bigger) size for a book, and had taken out all of the repeated stuff, this would have been a very short book indeed.

Does that mean that I don’t think it’s worth it to buy?  At retail ($19.95) probably not.  But if you can find it on discount, then I’d go for it.  There really is a lot packed into these pages, much more than what I’ve covered above.  Or just do like I did and check it out of the library.

I give Why Dirt is Good: 5 Ways to Make Germs Your Friends 4.25 out of 5 stars.  If you’re a germophobe who uses every sanitizing product under the sun, then run, don’t walk, to the bookstore and buy it.  Or order it online.  It will change your way of thinking, guaranteed.

Hava