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A short primer on how to Lose Weight — What to Eat and When to Eat

How to Balance Feeding and Fasting

Dr. Jason Fung
7 min readMay 16, 2018

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Here’s a startling truth. I can make you fat. Actually, I can make anybody fat. How? I simply prescribe insulin injections. Giving people extra insulin leads inevitably to weight gain. In type 1 diabetes, when insulin levels are extremely low, patients lose weight no matter how many calories they eat. Give insulin — gain weight. No insulin — lose weight (even to the point of death). The implication is clear. Insulin causes weight gain. Knowing this is crucial, because if insulin causes weight gain, then losing weight depends upon lowering insulin. But instead, we’ve been told to focus obsessively on calories.

The standard (failed) weight loss advice is to restrict a few calories every day by reducing dietary fat and eating multiple times per day. This does not lower insulin much since dietary fat has little insulin effect and eating frequently constantly stimulates insulin secretion. This ‘caloric reduction as primary’ advice has an estimated failure rate of 99.5%. So, if you have tried…

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Dr. Jason Fung
Dr. Jason Fung

Written by Dr. Jason Fung

Nephrologist. New York Times best selling author. Interest in type 2 diabetes reversal and intermittent fasting. Founder www.TheFastingMethod.com.

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