Marilyn Diamond

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Marilyn Diamond
OccupationHealth & Longevity Author
Years active1985–present
Spouse(s)Donald "Dr. Rock" Schnell

Marilyn Diamond is an American author,[1] and speaker on the topic of anti-aging and longevity. She is known for advocating a "cleansing" or "detoxification" diet,[2] based on certain combinations of foods.[3][4]


In 1985,[5] with her then husband Harvey Diamond, she co-authored the best-selling health and wellness book Fit for Life.[6] The book built on the natural health movement that had roots in 19th century, and was part of the development of the fascination with celebrity beauty in contemporary American culture.[7]

Diamond's ideas about diet and aging have been the subject of controversy in the media.[8][9][10] In particular, nutritionists disagree with her assertion that some foods should not be eaten together.[11]



  • Diamond, Marilyn (2010). Fit for Life. Grand Central Life & Style/Hachette. pp. 336 pages. ISBN 0446553646.
  • Diamond, Marilyn (2013). Young for Life: The Easy No-Diet, No-sweat Plan to Look and Feel 10 Years Younger. Rodale Books. pp. 352 pages. ISBN 1609615425.
  • Diamond, Marilyn (1987). A New Way of Eating from the Fit for Life Kitchen. Grand Central Publishing. pp. 176 pages. ISBN 1609615425.
  • Diamond, Marilyn (1998). Fitonics for Life. Avon. pp. 448 pages. ISBN 0380789671.[12]
  • Diamond, Marilyn (1990). The American Vegetarian Cookbook from the Fit for Life Kitchen. Grand Central Publishing. pp. 422 pages. ISBN 0380789671.
  • Diamond, Marilyn (1987). Living Health. Grand Central Publishing. pp. 468 pages. ISBN 0380789671.
  • Diamond, Marilyn (1998). Recipes for Life: From the Fitonics Kitchen. Avon Books. pp. 353 pages. ISBN 0380789671.
  • Diamond, Marilyn (1991). The Fit for Life Cookbook. Bantam Books. pp. 449 pages. ISBN 0553404067.


  1. ^ Schnell, Donald (June 2013). "Young for Life". Life Extension. Life Extension Foundation.
  2. ^ Phillip Day (1999). Cancer: Why We're Still Dying to Know the Truth. Aware Journalism. pp. 78–. ISBN 978-0-9535012-4-3.
  3. ^ Vic Shayne (1 June 2001). Illness Isn't Caused by a Drug Deficiency: Healthy Choices and Whole Nutrition. iUniverse. pp. 33–. ISBN 978-0-595-18718-8.
  4. ^ Marge C. Enriquez (25 February 2014). "Green living, according to Elizabeth Sy". Philippine Daily Inquirer.
  5. ^ Lesley Rotchford (8 February 2013). "Diets through history: The good, the bad and the scary". CNN.
  6. ^ Dal LaMagna (16 September 2010). Raising Eyebrows: A Failed Entrepreneur Finally Gets it Right. John Wiley & Sons. pp. 109–. ISBN 978-0-470-92143-2.
  7. ^ Christopher Ziguras (2 June 2004). Self-care: Embodiment, Personal Autonomy and the Shaping of Health Consciousness. Routledge. pp. 69–. ISBN 978-1-134-41969-2.
  8. ^ Rose Dosti (20 March 1986). "Book May Remain No. 1 Among Readers, but Nutritionists Don't Agree : Diamonds' 'Fit for Life' Theory Refuted by Experts". Los Angeles Times.
  9. ^ "Fit for Life". Diets in Review.
  10. ^ Lucy Moll (September 1986). Between the lines of 'Fit For Life'. Vegetarian Times. Active Interest Media, Inc. pp. 39–. ISSN 0164-8497.
  11. ^ Carrie Wiatt (17 October 2011). "Fruit: Fads, Digestion and Cleanses". Huffington Post.
  12. ^ "Fitonics For Life Review". Diet Spotlight.