Intermittent fasting: down 42 pounds in 14 months

Before and after

Kay wrote to us on Facebook:

I have been doing intermittent fasting for 14 months. I watched all of Dr. Jason Fung’s videos on Diet Doctor and was inspired. I fast 19 hours every day and eat in a 5-hour window. I’ve lost 42 lbs and 8.5 inches in my waist. Thank you, and Dr. Fung!


Congratulations, Kay!

Do you want to try what she has done? Use our guides or videos below.


Intermittent fasting for beginners

How to lose weight

Intermittent fasting

Weight loss

Low-carb basics

More success stories

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Do you have a success story you want to share? Send your information, plus before and after photos, to It would also be greatly appreciated if you shared what you eat in a typical day, whether you fast etc. More information:

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