| By Steven Kaplan

Do you even know what "gluten" is? I'm not totally sure myself, but I think it's some kind of protein. I've heard that if I eat too much of it, I could spontaneously combust, and like Novak Djokovic and Marty Fish, cutting it out of my diet will help me play better tennis … or not. It's big business for sure.

In 2016, it's estimated to be a $15 billion industry. Novak Djokovic even wrote a best-seller "Serve to Win: The 14 Day Gluten-Free Plan for Physical and Mental Excellence." Before jumping on this bandwagon, however, it might be wise to take this fad with a grain of grain.

Peter Gibson at Monash University published a study in 2011 warning about the dangers of Non-Celiac Gluten Sensitivity (it's long been acknowledged that gluten is problematic for the one percent of Americans who suffer from Celiac Disease).

Well you have got to just love science because in a new study published in The Journal of Gastroenterology Professor Gibson says non-celiac gluten sensitivity doesn't exist. He said, “In contrast to our first study … we could find absolutely no specific response to gluten."

And I thought they called Djokovic "The Joker?"

So how then did Djokovic and Fish make such dramatic improvements if it wasn't their self-proclaimed dietary improvements?

Your guess is as good as mine, but something here is downright Fishy.

Steven Kaplan

Steve Kaplan is the owner and managing director of Bethpage Park Tennis Center, as well as director emeritus of Lacoste Academy for New York City Parks Foundation, and executive director and founder of Serve &Return Inc. Steve has coached more than 1,100 nationally- ranked junior players, 16 New York State high school champions, two NCAA Division 1 Singles Champions, and numerous highly-ranked touring professionals. Many of the students Steve has closely mentored have gone to achieve great success as prominent members of the New York financial community, and in other prestigious professions. In 2017, Steve was awarded the Hy Zausner Lifetime Achievement Award by the USTA. He may be reached by e-mail at StevenJKaplan@aol.com.