Debunking myths about soy, our guest blogger today is esteemed pediatrician Dr. Roy Benaroch. In practice near Atlanta, Georgia, he is an assistant clinical professor of pediatrics at Emory University, a father of three, and the author of The Guide to Getting the Best Health Care for your Child and Solving Health and Behavioral Problems from Birth through Preschool . We enjoy his blog The Pediatric Insider and we think you will enjoy the except below.
Drs. Lai and Kardos
_____________________________
From LeeAnn: “Are soybeans (edamame) safe for my 11 year old daughter to eat? I have heard that they can ‘mess with’ her hormones?”
You want to see a freakshow? Try googling this topic. I found one essay, on a “news” site, that blamed soy products for everything from stroke to vision loss to homosexuality. On the other hand, other authors love soy: it will apparently prevent heart attacks, improve the symptoms of menopause, and help flush the toxins out of your body while improving your sex drive (women) and fracture healing (men.) On one site, in two adjacent paragraphs, I found a breathless author worrying that soy could cause breast cancer, followed by a second paragraph extolling its virtues in preventing breast cancer.
Please.
Soybeans contain a group of chemicals called “phytoestrogens” (sometimes called “isoflavones”) that are chemically somewhat similar to human estrogen hormones. In the 1970’s and 1980’s, some research showed that in the laboratory, these compounds could activate human estrogen receptors, presumably causing estrogen-like effects. So that’s the germ of truth.
But these phytoestrogens activate human estrogen receptors very, very weakly. They’re also easily broken down by cooking and processing, and by enzymes in the human body. It would take a tremendous amount of soy, eaten every day, to have anything close to a genuine hormonal effect. No human study has shown anything close to a measurable effect of consuming soy, at least not in ordinary amounts.
So: enjoy your edamame, tofu, and soy burgers. If you want to be super-careful, just don’t do all of this on the same day.
© 2010 Roy Benaroch, MD
Printed with permission in Two Peds in a Pod


Why does that big pimple always appear the night before prom, picture day, her sweet sixteenth birthday party or any other important event in your teen’s life?
Here’s a quick blast of more summer hints.
Okay ready? Put your palms together. Fold your pinkie and ring fingers down. Tuck in your middle and pointer fingers. Cross your thumbs. Allow your BFF to lean over and suddenly push your knuckles together: c-r-a-c-k ! She cracks your knuckles.
Earlier in the month I attended a developmental pediatrics conference in Philadelphia. The keynote speaker, Barry Zuckerman MD, professor and chairman of pediatrics at Boston University, raised a set of thoughtful questions. Parents can use the answers as a starting point for understanding how they were raised. Here are some of the questions with modifications:
It’s June, a time of hellos and goodbyes.
Sand and specks of dried seaweed fly into the air. Your kids are on the beach shoveling their way to China. “Watch out!” you yell. “Watch those shovels! The ocean is big. The beach is big. You don’t need to be right on top of each other. There is plenty of sand for everyone.”
“Mom, can we do screen?”
Your son’s baseball league has just upped the ante, moving from “coach pitch” to “kids pitch.” The good news is that your budding major league pitcher gets some practice. The bad news is that the pitches can be wild. Thank goodness for batting helmets!
Here is a photo of a lovely plant nestled along side the bicycle path my family rode on over the weekend. Recognize it? “Leaves of three, let them be!”- That’s right, it’s either poison oak or poison ivy. In this case my iphone captured poison ivy in its late spring glory. As we rode along I barked at my family to avoid the poison ivy, reminded them about Lyme ticks, rubbed in sunscreen, fitted bike helmets and fretted over everyone’s hydration status. Nothing is more jovial and carefree than a bike ride with your pediatrician mom!
