Thomas published his first book, "The Philosophy of Divine Nutrition"(1977) it was his doctoral thesis on the subject of Metaphysical Philosophy at the Tree of Life School, located in New York. This book was also the text of his Guinness Book World Record for the "longest sermon" - 93 consecutive hours (September 18-22, 1978).The premise of his philosophy is that every religious text has instructions on health, longevity and nutrition and that an analysis and synthesis of this advise is the basis for his concept of Divine Nutrition.

 The total PDN program is an internal martial art based upon the concepts of Jeet Kune Do, developed by the late Bruce Lee. 

In addition to his Sermon record, he also holds two world records in after-dinner speaking, based upon his book on motivation, fitness and herbal sports nutrition, titled The Way of PDN- The Ultimate Vegetarian Athletic Nutrition Program(1986)

After every world record, he has given a jump rope demonstration.

New Jump Swing is the jump rope fitness program and video developed  by him as a part of his rehabilitation from respiratory disease and knee disease, as well as knee surgery.

Thomas is an ordained minister (non denominational, non sectarian) who has devoted his life to the advancement of the disenfranchised, people with disabilities, as well as at-risk youth. With this commitment to public service, he has been a Vice President of the NAACP of Hawaii, Paul Harris Fellow and member of the Rotary Club of Waikiki and South Hilo as well as board President of Hawaii Disability Rights Center (HDRC), since the early 1990's.

Along with his duties as President of PDN Publishing & Health Products, Inc. he is currently an Advocate with the Hawaii Disability Rights Center, East Hawaii branch.  The HDRC protects and promotes the human, civil and legal rights of people with disabilities through the provision of information and advocacy.

Married since 1995 to the former Pamela Roldan of Kahuku, Hawaii, Donald and Pamela live on the Big Island of Hawaii (Hawaii, Hawaii), with their two dogs, Ms. Frankie II and Ms. Johnnie Mae. And a recent arrival to the family...his mom, Mrs. Rosa Thomas

He can be found in the following editions of the

Guinness Book of World Records  

and other notable publications: