Michael Klaper

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Michael Klaper
Born Michael Anthony Klaper
July 19, 1947
Nationality American
Citizenship American
Education University of Illinois College of Medicine, 1972 (Zoology, Psychology, Astronomy)
Occupation Medical doctor
Known for Veganism
Relatives parents: David Klaper, DDS (father); Jean T. Klaper(mother); Robert D. Klaper (brother); Cynthia Lee Pararo (ex-wife); Alese Jones (wife since April 8, 2014)
Medical career
Profession Family medicine[1]
Institutions Institute for Nutrition Research and Education, NASA, True North Health Center, Santa Rosa Medical Center
Specialism nutritional medicine, lifestyle medicine, veganism
Research nutritional medicine, vegan nutrition
Website www.doctorklaper.com

Michael A. Klaper (July 19, 1947) is an American physician, vegan health educator and conference and event speaker, and a author of articles and books of vegan medical advice. He advocates rearing children on vegan diets throughhout their entire lifetimes, beginning with the vegan mother's pregnancy.[2] Oncologist David Gorski claims that Klaper is "peddling highly dubious claims... pseudoscience and harmful surgical and cancer advice".

Early life and education[edit]

Klaper was born July 19, 1947 to David T. Klaper, DDS, a Chicago South Side dentist (d. 1988)[3][4] and Jean T. Klaper (formerly of Boca Raton, Florida).[5] Michael's brother, Robert D. Klaper, was a biology teacher in Wheaton, Illinois.[6] By his own report, he grew up on a dairy farm in Wisconsin.[7] In 1972, Michael was graduated at age 24 from the University of Illinois College of Medicine, after studying zoology, psychology, and astronomy there as an undergraduate.[8][9] and served his medical internship in Canada at Vancouver General Hospital with the University of British Columbia. He also studied obstetrics at the University of California, San Francisco.[10]

In 1987 Klaper appeared on the game show Jeopardy and won $11,000.[11]


After medical school graduation, Klaper moved among a number of locations, practiced acute care medicine, and eventually became certified in urgent care medicine. In his current public speaking, a number of his anecdotes and stories come from those crisis experiences. Klaper became a vegan in the early 1980s.[12][13] He is a medical consultant for the North American Vegetarian Society[14] and has spoken at their Vegetarian Summerfest in 2012[15] and 2018.[16] Klaper has spoken at several other national and international vegan, vegetarian, and natural health conferences and events.[17][18][19]

He served as director of a vegan health spa in Pompano Beach, Florida from the early 1990s and was featured on the 1991 PBS documentary Diet for a New America by John Robbins[citation needed]. In 1988, Klaper was a NASA nutrition adviser and medical consultant on vegan diets for astronauts during long stays in outer space.[20]

He also served during the 1980s on the Nutrition and Preventive Medicine Task Force[21][22] of the American Medical Student Association (AMSA)[citation needed], where he is a member of its Board of Advisors. He cofounded with John Robbins the environmental organization EarthSave International and served as its Scientific Director. He is a Founding Director of the Institute for Nutrition Research and Education, where he has conducted longitudinal research on vegan individuals, some of whom were recruited for the study through his speaking engagements.[23]

Klaper maintained a medical practice in Maui, Hawaii between 1995 and 2006, and practiced medicine in Whangarei, New Zealand between 2006 and 2009. In 2009, he relocated to Northern California, where as of 2011 he became staff physician and medical consultant at the nutritionally-based TrueNorth Health Center in Santa Rosa,[24][25][26] where is now is on the Board of Directors of the TrueNorth Health Foundation.[27] He is licensed to practice medicine in California and Hawaii and now is affiliated with the Santa Rosa Memorial Hospital.[28]

His books include Vegan Nutrition: Pure and Simple and Pregnancy, Children, and the Vegan Diet. He has appeared in several films related to vegan diet and practice, including Eat This! (2005), Cowspiracy: The Sustainability Secret (2014), and What the Health (2017).[29]

Klaper is also on the advisory board of Naked Food Magazine, a quarterly publication for which he is also a regular contributor of articles espousing a plant-based diet.[30]


In August 1993 Klaper issued a medical certificate for the insurers of two movies that River Phoenix was working on at the time, Dark Blood and Interview With the Vampire. The certificate was signed by both Klaper and Phoenix and stated that Phoenix had never used "LSD, heroin, cocaine, alcohol in excess, or any other narcotic, depressant, stimulant or psychedelic. At the time Phoenix was deeply into the drug scene and died from a drug overdose two months later on October 31, 1993. Phoenix's death resulted in Dark Blood being scrapped, and his role in Interview with the Vampire being replaced by Christian Slater. A total $US5.7 million was paid out by the insurers of both movies as the result of Phoenix's death. Since Phoenix's death insurance rates have increased significantly, medical certificates are no longer accepted, and actors are required to undergo more rigorous medical examination prior to being insured. [31]

According to oncologist David Gorski "Klaper subscribes to the all-too-common claim that a vegan diet is better than any other and supplements that claim with a belief that undergoing fasts, in which one consumes only water, is a major part of the path to health and wellness". He supports multiple pseudoscience medical claims such as acupuncture, chiropractic, naturopathy and border-line "germ theory denialism". Klaper also gives "highly dubious advice for cancer patients, even claiming that fasting can shrink malignant tumors. Klaper claims that fasts will clear up inflammation, eczema, arthritis and other issues. "The situation" according to Gorski, is "way more complicated than Dr. Klaper paints it". As a surgeon himself, Gorski is appalled that Klaper claims that fasting encourages "faster wound healing" a statement that Gorski calls "Bullshit!". Magician Penn Jillette reported on multiple podcasts that he has lost over 25 pounds on Klaper's water fast diet, Gorski responded that of course he will lose weight on a water-only diet. In Gorski's opinion as a medical doctor himself, "Jillette has fallen "hook, line, and sinker for a whole lot of dietary pseudoscience and promoting it on his show with a credulous interview with someone like Dr. Klaper". Gorski hopes that Jillette will eventually realize "that Dr. Klaper is peddling highly dubious claims (at best). Basically, the product Dr. Klaper is peddling in terms of science is a massive exaggeration based on dubious science, cherry picked cases, and bad evolutionary analogies. Worse, fasts, even when supervised by a physician, are potentially dangerous".[32]



Republished in German in 2007 as Viva vegan für Mutter und Kind: gesunde vegetarische Ernährung während Schwangerschaft und Kindheit, Publisher: Animal-Peace-Verlag, 2007; ISBN 3981173805, 9783981173802; 134 pages.[34]

Forewords in books, including

This was first published in 1983 as a spiral-bound cookbook, for which Michael A. Klaper was listed as the only author.[35] It was republished numerous times, in 1987, 1989, and 1990, with (the corporate) Gentle World Incorporated listed as the sole author.

Various journal articles, including:


  • A Diet for All Reasons
  • Sense and Nonsense in Nutrition: A Look at Today's Most Common Health Myths. VegSource Studio: 67 minutes. ASIN: B009DOGJOA.

See also[edit]


  1. ^ "Dr. Michael Klaper, MD – Santa Rosa, CA | Family Medicine". Doximity.com. Archived from the original on 2016-10-23. Retrieved 2018-07-20. 
  2. ^ Klaper, Michael (1991) [1988]. Pregnancy, Children, and the Vegan Diet (1st ed.). Kapaau, Hawaii: Gentle World. ISBN 978-0961424824. 
  3. ^ Obituary for Dr. David Klaper, father of Michael A. Klaper and Robert D. Klaper
  4. ^ IDFPR database for Illinois dentists, shows Dr. David Klaper as deceased
  5. ^ Obituary for Dr. Klaper's mother, Jean T. Klaper
  6. ^ Obituary for Robert D. Klaper, Chicago Daily Herald, Suburban Edition, September 18, 1992
  7. ^ Shurtleff W, Aoyagi A. History of Soy Ice Cream and Other Non-Dairy Frozen Desserts (1899-2013), page 470, entry 1337. Soyinfo Center, Oct 18, 2013. 782 pages
  8. ^ Dr Michael Anthony Klaper, MD - Medicare General Practice in Santa Rosa, CA. MedicareList profile for Michael Anthony Klaper, MD, including his NPI Number: 1750565123; PECOS PAC ID: 6709945991; and Enrollment ID: O20081103000329
  9. ^ Radaris profile for Michael Anthony Klaper, MD
  10. ^ "Michael Klaper, M.D. | Nutritional Education Institute". Nutritionaleducation.com. Retrieved 2018-07-19. 
  11. ^ "No Way Tampa Bay". Orlando Sentinel. August 12, 1987. Archived from the original on August 8, 2018. Retrieved July 26, 2018 – via newspapers.com. 
  12. ^ "Dr. Michael Klaper: A Vegan Physician on Voices from the North". In Search of Simplicity. 2009-04-29. Retrieved 2016-01-07. 
  13. ^ Harris, Sarah (November 17, 2017). "Vegan Dr Michael Klaper shares diet advice for Nutrition in Healthcare Symposium". nzherald.co.nz. Archived from the original on July 19, 2018. Retrieved August 13, 2018. 
  14. ^ "Plant based prevention of disease annual national conference, Dr. Michael A. Klaper". preventionofdisease.org. 2017. Retrieved August 13, 2018. 
  15. ^ "Vegetarian Summerfest Program 2012, Speakers" (PDF). navs-online.org. 2012. Archived (PDF) from the original on August 13, 2018. Retrieved August 13, 2018. 
  16. ^ "Vegetarian Summerfest, Speakers 2018". navs-online.org. 2018. Archived from the original on August 13, 2018. Retrieved August 13, 2018. 
  17. ^ Events and appearances, by years, of Dr. Klaper
  18. ^ Veganism at the International Vegetarian Union (IVU) World Congress. The Vegan Society (UK) website, circa 2012
  19. ^ Attendee comments. 8th International Vegan Festival, August 1995, San Diego, CA.
  20. ^ "Michael Klaper, M.D. & Alese Jones, RYT". veganhealthandfitnessmag.com. June 6, 2017. Archived from the original on August 13, 2018. Retrieved July 20, 2018. 
  21. ^ National Research Council (US) Committee on Nutrition in Medical Education. Nutrition Education in U.S. Medical Schools. Washington (DC): National Academies Press (US); 1985. Appendix F, Testimony of the American Medical Student Association: Nutrition Education in the Undergraduate Medical Curriculum.Available from: https://www.ncbi.nlm.nih.gov/books/NBK216785/ Accessed July 20, 2018
  22. ^ Nutrition in Medical Education: Historical Perspective University of Texas, Health Science Center at Houston website, accessed July 20, 2018
  23. ^ Dr. Klaper states his conclusions from his Vegan Health Study, 2002-2007, n1=1208; n2=45 (with lab results)
  24. ^ "Famed Vegan MD Michael Klaper Moves Practice to California". Vegsource.com. Retrieved 2016-01-07. 
  25. ^ "The Doctors at TrueNorth Health Center". TrueNorth Health Center. Archived from the original on 2012-06-15. 
  26. ^ "Your Stay at the Center". TrueNorth Health Center. Retrieved 2016-01-07. 
  27. ^ TrueNorth Health Foundation. Accessed July 20, 2018
  28. ^ NPI listing of Dr. Michael Anthony Klaper
  29. ^ IMDB profile page for Michael Klaper
  30. ^ Honorary Members, Contributors & Supporters: Doctors & Plant-based Heroes/ Naked Food Magazine. Accessed July 20, 2018
  31. ^ Cororan, Monica (September 25, 1994). "River Phoenix's legacy: Actors face tougher scrutiny from insurers for movie contacts". Montreal, Canada: The Gazette. p. F1. Archived from the original on August 3, 2018. Retrieved July 27, 2018 – via newspapers.com. 
  32. ^ Gorski, David. "Penn Jillette interviews water fast guru Dr. Michael Klaper. Woo ensues". Respectful Insolence. Science Based Medicine. Retrieved 1 August 2018. 
  33. ^ AVS synopsis of Pregnancy, Children, and the Vegan Diet
  34. ^ An earlier informal version (without cover) was published in June 1988 by Gentle World Incorporated, Umatilla, Florida, originally through Pennsylvania State University in 1987
  35. ^ 1983 publication of https://www.amazon.com/gp/product/096142480X/ref=dbs_a_def_rwt_hsch_vapi_taft_p1_i3

External links[edit]