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Fast-5 E-book (full text PDF of the paperback book) is FREE!

The e-book is free without a donation, but please consider donating if you're able. Donations help Fast-5 Corporation support this site, provide continuing unbiased research analysis, and will make grants available to answer questions about best-health practices for the average person, with all data open for public review.

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Some questions that your donation could help answer:

  • Does it matter what time of day my eating window is?
  • Does Fast-5 reverse cardiovascular / coronary vessel disease?
  • How much does Fast-5's anti-inflammatory effect help with rheumatoid arthritis? Multiple sclerosis? Other autoimmune disorders?
  • How does Fast-5 compare to other styles of intermittent fasting in terms of weight loss and sustainability?

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Please allow time to download; the PDF document is one 2.8 MB file. You can also purchase the paperback or the Kindle version at