Personal Testimonials

“I know Katherine as both a counselor and a colleague.  She was invaluable to me as I sought to improve my own diet and better understand the nutrition world, which can be quite complex.  She is an excellent teacher and motivator and after struggling with weight issues for many years, she got me onto an effective path.” –Lisa O.

“The appointments at Tallmadge’s Dupont Circle office were lively — part therapy session, part recipe swap, part David Letterman show.” Carole Sugarman, in The Washington Post’s “Can a Chef Scale Back: The Diet Diary of Roberto Donna.”

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