Category Archives: Fast-5 Diet (Bert Herring, MD)

The Fast-5 Diet by Bert W. Herring, MD #fasting

Among the many volumes in my low-carb and health library is ont called ‘The Fast-5 Diet and the Fast-5 Lifestyle,’ by Bert W. Herring, MD.


I first heard of Dr. Herring when I read ‘The Complete Guide to Fasting’ by Jimmy Moore and Dr. Jason Fung.


Dr. Herring’s approach is to have people slowly adjust their eating window— the time of day when they allow themselves to eat. Some people only don’t allow themselves to eat when they are sound asleep!


You figure out in which hours your eating window is currently open, and when it is closed. And then you start adjusting. If you snack constantly in the evening til 11 pm, you start ending the snacking at 10, then at 9.


Dr. Herring’s goal is to narrow your eating window to the hours of 5pm to 10pm. But he also says you will be eating one meal a day. Does it really take from 5 to 10 to eat your supper? 


Dr. Herring also does not say one word about doing low-carb in your eating hours, and he seems big on cutting ‘calories.’ If you know about Kekwick and Pawan’s 1957 study, you know the ‘calorie is a calorie is a calorie’ slogan has been disproved some time ago.


If you want to add intermittent fasting to your life and have the choice between this book and Moore and Fung’s ‘The Complete Guide to Fasting,’ go with Moore & Fung. Much more informative book.


But if you or someone you know is just not at the point of doing low-carb but needs to get more control over weight or health issues such as blood sugar, the ‘Fast-5 Diet’ might be the right approach.


Personal note: I’ve been doing intermittent fasting every since the Moore/Fung book came out. Usually I do morning fasting. Sometimes I have allowed myself a bulletproof coffee, or lightly-bulletproof coffee in the morning.


After my health issues a few years ago, I did less fasting— I had to fast part of the time in the hospital, the rehab center, and ‘elsewhere’ to avoid meals that were mostly carbs.


But I’ve recovered now, and decided to get back on track with fasting. After a failed attempt with Dr. Jason Fung’s 30-hour fasting protocol, I went back to the no-breakfast plan. I usually close my eating window at 5 to 5:30 pm, since eating late raises my blood sugar the next morning. 


And I realized— if I eat my lunch at 12 noon and my supper just before 5, I have the same eating window Dr. Herring recommends. I just have two meals within it. Since they are low-carb meals, I think I can expect as good a result as the Fast-5 dieters.


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