About the Author
Mehrdad Jamshidi is the author of Intermittent Fasting in Practice, a practical guide to building a fasting routine that actually lasts. He teaches intermittent fasting to a community of more than 400,000 followers, with a focus on making fasting simple, safe, and sustainable for real life — not extreme, not complicated.
Everything published on FastingInPractice draws on the research and protocols compiled in the book: eating-window protocols like 16:8 and OMAD, the science of insulin and metabolic health, hunger management, and the mindset that separates people who try fasting from people who keep it.
Mehrdad founded FastingInPractice to be the most complete intermittent fasting resource available in both English and Persian — including what's believed to be the largest Farsi fasting knowledge base anywhere, with over 500 articles, 125 fasting-friendly recipes, a monthly community challenge, and free tools like the fasting window calculator.
“I wrote this book because I watched hundreds of people around me start fasting with real enthusiasm and quit within a month — not because the science failed them, but because nobody had prepared them for the hungry evenings, the family dinners, and the voice that says today doesn’t count. Fasting is simple. Staying a faster is the skill, and that is what I teach.”
— Mehrdad Jamshidi (مهرداد جمشیدی)
The book
Intermittent Fasting in Practice
How to Win Fasting — Mentally, Socially, and Physically · with Mark James · 2026
The complete method behind this site: the protocols, the science, and the mental and social side of fasting nobody warns you about. Available on Amazon.
Find Mehrdad elsewhere
- Instagram — daily fasting teaching to a community of 400,000+ followers
- Open Library — the book’s record in the Internet Archive’s open catalogue
- Goodreads — author page and reader reviews
How we publish
Articles on this site explain published scientific research in plain language and always link the underlying studies where cited. Content is reviewed for accuracy against the current literature before publication and updated when the science moves.
Medical disclaimer: Content on FastingInPractice is educational and not medical advice. Fasting is not appropriate for everyone. Always consult a healthcare professional before starting any fasting protocol — especially if you take medication, are pregnant or breastfeeding, or live with a medical condition.