Intermittent fasting for beginners
– the evidence
It’s written by Dr. Jason Fung, MD, with the latest major update on January 24, 2020. Review and fact-checking by Franziska Spritzler, RD, and further research and fact-checking by Paul Rutkovskis. The guide was medically reviewed by Dr. Bret Scher, MD, on January 24, 2020.1
The guide contains scientific references. You can find these in the notes throughout the text, and click the links to read the peer-reviewed scientific papers. When appropriate we include a grading of the strength of the evidence, with a link to our policy on this. Our evidence-based guides are updated at least once per year to reflect and reference the latest science on the topic.
All our evidence-based health guides are written or reviewed by medical doctors who are experts on the topic. To stay unbiased we show no ads, sell no products and take no money from industry.2 We’re fully funded by the people, via an optional membership.3
This guide is written for adults with health issues, including obesity, that could benefit from intermittent fasting. Learn more.
People who should NOT fast include those who are underweight or have eating disorders like anorexia, women who are pregnant or breastfeeding, and people under the age of 18. Learn more.
Should you find any inaccuracy in this guide, please email firstname.lastname@example.org.
A full declaration of potential conflicts of interests of individual authors or reviewers can be found on their personal pages, linked from their names. ↩
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