67 Fasting Benefits: The epic and ultimate ever-growing list of fasting benefits

Written By Mikayla H

There are so many incredible benefits of fasting. We put together a compilation of them all so that you don’t have to search anywhere else.

Here’s a detailed list of all of the professionals and the benefits they share in this video:

From Francoise Wilhelmi de Toledo, MD:

  1. Blood sugar goes down
  2. Insulin goes down
  3. Non-esterified fatty acids (usable fat for fuel) go up
  4. Increase of glucagon (promotes sugar mobilization whereas insulin would cause the sugar to be stored as fat)
  5. Increase of growth hormone (useful for building muscle,  new tissue, and repairs)
  6. Increase in cortisol
  7. Increase in adrenaline
  8. mTOR inhibited
  9. Switching to ketones for fuel
  10. Reduction of inflammation
  11. Diminishing of oxidative stress
  12. Improvement of antioxidant metabolism
  13. Positive effects on metabolic diseases including:
  14. Overweight
  15. Metabolic syndrome
  16. Hypertension
  17. Diabetes Type II
  18. Blood lipid abnormalities
  19. Glucose metabolism abnormalities
  20. Leading to cardiovascular diseases
  21. Improve symptoms of chronic inflammation diseases including (ex. asthma, allergies, autoimmune diseases, arthritis, etc.):
  22. Decrease pain
  23. Improve mobility
  24. Improve quality of life

Mood enhancements:

  1. Pre–burnout
  2. Depressive mood
  3. Improvement of general drive


  1. Improvement of epilepsy
  2. Prevention of multiple sclerosis
  3. Prevention of Parkinson’s disease
  4. Probably the prevention of certain forms of cancer (at least in animal models w/chemotherapy) 


David Sinclair, Ph.D., A.O.:

  1. Longevity genes are turned on by fasting
  2. Extends lifespan


Megan Ramos:

  1. Balancing women’s hormones
  2. Improves fertility
  3. Reverses PCOS (typically w/in 6 months)
  4. Reduces ravenous hunger feelings
  5. Restores regular menstrual cycles


Pradip Jamnadas, MD: 

  1. Improves metabolism of meals after being in a fasted state (improves insulin sensitivity)
  2. Burns fat
  3. Increases metabolic rate (18+ hr fast)
  4. More alert
  5. BDNF = Hormone that switches on your brain + makes new brain cells


Dr. Boz, MD:

  1. Autophagy – cleans up cells
  2. Reduces likelihood of surgery
  3. Reduces neurofibril tangles
  4. Prevents Alzheimer’s 
  5. Prevents memory loss
  6. Extends lifespan of all different types of cells 
  7. Prevents excess skin due to weight loss
  8. Avoids caloric restriction torture diets  


Jason Fung, MD:

  1. Powerful (maybe this one is redundant with everything else on this list 😂 But, I kept it, because we all know there are more benefits of fasting than what I’ve included on this list) 
  2. Works with any diet
  3. Free
  4. Convenient
  5. Simple


James Clement:

  1. Reduce likelihood of obesity and all-cause risk of death
  2. Helps body develop mechanisms to burn fat


Pradip Jamnadas, MD: 

  1. Improves addiction
  2. Metabolic flexibility, improves overall health
  3. Reduces risk of coronary artery disease
  4. Reduces risk of stroke
  5. Improves blood pressure
  6. Join disease
  7. Dementia 



About Francoise Wilhelmi de Toledo, MD:

Françoise Wilhelmi de Toledo is MD and director of the scientific department of the Buchinger Wilhelmi Clinics in Überlingen (Germany) and Marbella (Spain). Dr Wilhelmi de Toledo has 40 years long clinical experience in the field of fasting and nutritional strategies and has written several books on this topic as well as publications in large cohorts with focus on long-term fasting in cooperation with universities and national research centers.

She has organized and chaired numerous international congresses on the topic of fasting research, is founder of the Medical Society for Fasting and Nutrition in Germany since 1986 as well as president of the Maria Buchinger Foundation which aims to support fasting research. She was lead author to the consensus fasting guidelines for fasting therapy in an expert panel and organized in partnership with the University Clinic Charité a Summer School in nutritional strategies, fasting and complementary medicine for medical students.

About David Sinclair, Ph.D., A.O.:

David A. Sinclair, Ph.D., A.O. is a Professor in the Department of Genetics and co-Director of the Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School. He is best known for his work on understanding why we age and how to slow its effects. He obtained his Ph.D. in Molecular Genetics at the University of New South Wales, Sydney in 1995. He worked as a postdoctoral researcher at M.I.T. with Dr. Leonard Guarente where he co discovered a cause of aging for yeast as well as the role of Sir2 in epigenetic changes driven by genome instability.

In 1999 he was recruited to Harvard Medical School where he has been teaching aging biology and translational medicine for aging for the past 16 years. His research has been primarily focused on the sirtuins, protein-modifying enzymes that respond to changing NAD+ levels and to caloric restriction (CR) with associated interests in chromatin, energy metabolism, mitochondria, learning and memory, neurodegeneration, and cancer. The Sinclair lab was the first one to identify a role for NAD+ biosynthesis in regulation of lifespan and first showed that sirtuins are involved in CR in mammals.

They first identified small molecules that activate SIRT1 such as resveratrol and studied how they improve metabolic function using a combination of genetic, enzymological, biophysical and pharmacological approaches. They recently showed that natural and synthetic activators require SIRT1 to mediate the in vivo effects in muscle and identified a structured activation domain. They demonstrated that miscommunication between the mitochondrial and nuclear genomes is a cause of age-related physiological decline and that relocalization of chromatin factors in response to DNA breaks may be a cause of aging.

About Megan Ramos: 

Megan Ramos is a Canadian clinical researcher. She joined Dr. Jason Fung and his colleagues as a research student with a keen interest in preventative medicine when she was just 15 years old. She’s a world-leading expert on therapeutic fasting and low carbohydrate diets, and has guided over 10,000 people worldwide. Passionate about overcoming her own health hurdles through diet and lifestyle modifications, she left the research team to co-found Intensive Dietary Management (IDM) along with Dr. Fung. She had been diagnosed with non-alcoholic fatty liver disease (NALFD) at age 12, polycystic ovarian syndrome (PCOS) at age 14, and type 2 diabetes (DMII) at age 27. She was able to reverse these metabolic conditions and achieve an 86 pound weight loss since incorporating intermittent fasting and time restricted eating protocols in combination with a low carb diet. Megan lives and sees clients in person in Toronto, Canada. She is one of the directors of the nonprofit organization Public Health Collaboration Canada (PHC Canada), an international group dedicated to promoting evidence-based nutritional information. She is also on the editorial board of the Journal of Insulin Resistance.

About Pradip Jamnadas, MD:

Dr. Pradip Jamnadas is the founder and medical director of Cardiovascular Interventions and has practiced in Central Florida for over 31 years. Widely recognized for his skill in interventional cardiology Dr. Jamnadas has been awarded Orlando Top Doctor by Orlando Magazine consecutively for over a decade.

He is on staff at AdventHealth Orlando, and teaches medical students as an Assistant Clinical Professor at Florida State University, the University of Central Florida College of Medicine, and residents in Florida Hospital’s teaching programs.

Educated in England, at the University of London College Medical School with internships in London and Kent, he completed his residency in internal medicine at the University of Maryland and his cardiology fellowship at Yale University. In addition he completed an interventional cardiology fellowship at St. Luke’s Hospital in Milwaukee, WI.

About Dr. Boz, MD:

Based in Sioux Falls, South Dakota, Annette Bosworth, MD is an Internal Medicine physician with over 22 years of experience helping patients overcome long-term, chronic conditions through lifestyle adjustment, preventive medicine, and other therapeutic paths. She’s been mentioned in media outlets ranging from CNN, Time, US News & World Report, to Fox News.In addition to medicine, she loves lecturing in town halls, jails, churches and universities. From politics to mission work, she lets her faith lead her to the next chapter of life-always looking for teachable moments. Along with her husband, she savors the adventure of raising three energetic, fast-growing sons through debate, wrestling, music, and theater. Always fighting for the underdog, she encourages patients with chronic health problems to “Fight it ANYWAY YOU CAN. Ketones for Life.”

About Jason Fung, MD:

Jason Fung, MD, was born in 1973 and trained in Los Angeles and Toronto as a kidney specialist. He founded The Fasting Method (TheFastingMethod.com) to provide evidence-based advice for weight loss and managing blood sugars, focusing on low carbohydrate diets and intermittent fasting.

It has become obvious that conventional medical treatments are failing patients. Many of today’s chronic medical issues are related to diet and obesity, yet treatments are focused on medications and surgeries. If you don’t deal with the root cause, the problem never improves. A dietary problem requires a dietary solution.

Dr. Fung is the author of The Obesity Code, The Complete Guide to Fasting, and The Diabetes Code. He is also the scientific editor of the Journal of Insulin Resistance and the managing director of the nonprofit organization Public Health Collaboration (Canada), an international group dedicated to promoting sound nutritional information.

About James Clement:

James W. Clement is a lawyer and entrepreneur turned research scientist who has devoted the past two decades to understanding the science of life extension. He is best known for his Supercentenarian Research Study, which he started in 2010 with Professor George M. Church of Harvard Medical School. Through worldwide collaborations and in his own laboratory in Gainesville, Florida, he focuses on advancing cutting-edge biomedical discoveries so that humanity can take advantage of these antiaging breakthroughs. Visit him at JamesWClement.com or follow him on Twitter @JamesWClement.




More Resources from these creators that may be of interest to you: 

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