"I wanted to let you know what a great presentation Dr. Katz made. Our attendees really enjoyed his remarks and his perspective on nutrition and longevity."

"Thanks so much for the great presentation! We received so many wonderful compliments…It was a pleasure to have you as a keynote!"

"Dr. Katz was outstanding! He received a standing ovation from our audience that lasted quite a while."

"We were truly honored to have you involved and your simply blew everyone away with your presentation on Saturday morning. The feedback was just incredible."

"Yes, everything went really well and Dr. Katz was a total pro of course. He gave a great talk and it was really well received with so many tweetable soundbites."

"On behalf of everyone at CAPG, I want to thank you for your outstanding participation during our General Session at the 2015 CAPG Healthcare Conference. We have already received a great deal of positive feedback about your exuberant remarks, and with more than 1700 attendees, our conference exceeded all expectations!"

"He did an AMAZING job!! The positive feedback I received was overwhelming and folks were so inspired!! He did an incredible job for us. Thank you!! Please tell him he was awesome and had everyone buzzing. He got a standing ovation as well. "

"Wow. It was a wonderful event and I can tell, the largest attended event in our history. Dr. Katz was outstanding and received a three-minute standing ovation at the end of his presentation. The room was full; we had to add chairs. He generously stayed outside the meeting room and talked to many. I think I could have him every conference and his message would resonate with our audience. Motivational, affirming, and hopeful, the items he shares that are clinical as well as his personal message of being an evidence-based physician, trained conventionally who wasn’t making his patients well…and what dictated the change to his practice. That’s our audience. Despite the term Anti-Aging, theA4M has evolved as an organization into integrative, functional, lifestyle medicine in our pursuit of providing advanced education to healthcare practitioners. This is why Dr. Katz’s message has been so well received by our group."

"We were so pleased to have Dr. Katz speak at our 39th Annual Wellness Conference. What an amazing way to close out our conference! "

"Everything went terrific. Our audience loved Dr. Katz; his lecture was terrific. Overall, Dr. Katz was very well received. I had about 6 docs following him to the car, as he was leaving. I know more would have!!! "

"We had an overwhelmingly positive response to Dr. Katz's presentation. We thank you for all your assistance in contributing to our event. "

"Everything went great and Dr. Katz was a hit! "

"I am a graduate of the Institute for Integrative Nutrition, and I loved hearing you speak to our class last year. I'm also impressed by everything you've done to make people more aware about health and nutrition.I remember that you moved many of my classmates and me to tears after you spoke. It was very emotional for a lot of us. "

"The event was wonderful and as always. Dr. Katz was magnificent with his message. It was a true success! "

"Once again, David, thanks. You have become our 'star attraction."

"We received an overwhelming positive response to Dr. Katz's presentation at GFA. "

"It was a pleasure hearing you speak once again. The Health and Physical Educators that I spoke with after your keynote address were incredibly impressed. One colleague couldn't believe your ending 'poetic' verse. Your dedication and commitment to well-being is much appreciated…Your work is admired and your ability to reach others is fantastic."

"[Dr. Katz] provided our audience with an entertaining, thought-provoking, challenging speech, one that reached beyond our already high expectations for his program slot. In addition to that, he was professional, charming, and very easy to work with. His presentation was very highly rated by our audience and helped create a very successful event for our organization."

"It was such a pleasure to listen to you today at IAEYC. I think your points were heard loud and clear by many who have trouble entertaining the notion of change at all."

"Thank you so much for presenting as a keynote speaker at the 2006 Florida School Health Association Conference in Orlando. Your presentation was very informative and was well received by all the participants. "

"Dr. Katz is a very generous man with his wit and wisdom and he wowed my people. They are a very critical bunch so that’s not an easy feat. He was very easy to work with as were all of you at Harry Walker. I’d work with you all again in a heartbeat. "

"EVERYONE was buzzing about how good your speech was."

"You struck a chord with the staff and helped open doors for me and my trainers to engage providers in a meaningful discussion about how we do (or don't) handle behavior change. Your talk was perfect, just perfect. It's obvious that you have a passion for the topic and that you lead in both words and deeds. You unique skill, in addition to all the papers and books, is to be able to communicate these key messages to all different sorts of people, from providers to lay people."