Articles + Stories by Our Experts


Metabolic Rate (How to avoid Starvation Mode)

Metabolic rate is how much energy (calories) your body uses in a day for normal function. This is the energy for your brain, heart, liver etc. and does not include exercise. We know that calorie restricted diets lower metabolic rate, and this limits weight loss, and is often called starvation mode. Dr. Jason Fung explains...

Compensation – Exercise Part IV

Countries that exercise more don’t have less obesity Mild exercise on average leads to caloric excess Only vigorous exercise leads to caloric deficit Even fairly extreme exercise like marathons don’t make people consistently lose weight. By Jason Fung, M.D., Co-founder of The Fasting Method The Washington Post wonders, “Exercise does so much for you. Why...

Exercise in Futility – Women’s Health Initiative

Scientific studies repeatedly confirm that ‘Eat Less, Move More’ is an inefficient way to lose weight Increasing exercise did not lead to more weight loss over time School based interventions of ‘Eat Less, Move More’ also failed By Jason Fung, M.D., Co-founder of The Fasting Method The standard ‘Eat Less, Move More’ weight loss strategy...

Exercise is an Inefficient Method of Weight Loss

Most people today are about as active as in the past Most people compensate for vigorous exercise by being less active the rest of the day Increasing exercise has little effect on weight loss By Jason Fung, M.D., Co-founder of The Fasting Method Diet and exercise, common strategies for reducing calories for weight loss, are...

Exercise is a Tiny Part of Daily Calories Expended

Total Energy Expenditure (TEE), or the total number or calories we use in a day has many components, and exercise is only a tiny, tiny part Basal Metabolic Rate, Thermogenic effect of Food, Non-Exercise activity thermogenesis, excess post-exercise oxygen consumption and exercise all contribute to TEE Compensation limits the weight loss effect of exercise Exercise...

Intermittent Fasting vs Cutting Calories

Why intermittent fasting is much more effective for weight loss than simple calorie restriction. Fasting allows insulin to fall which allows the body to use its stores of body fat for energy, where simple cutting of calories may or may not do so.

The “Exercise to Lose Weight” Myth

Exercise has many health benefits, unfortunately, weight loss is not one of them The number of calories used daily depends on the Basal Metabolic Rate (involuntarily controlled) and Exercise (voluntary) Exercise is a very small part of total energy expenditure Amount of exercise has almost no relationship to weight loss By Jason Fung, M.D., Co-founder...

The Astonishing Overeating Paradox

Influence of the Body’s ‘Fat Thermostat’ on Losing Weight . The body fat percentage is controlled like a thermostat, which will determine whether or not we lose weight When we lose weight, our body tries to regain that weight by increasing hunger and decreasing basal metabolic rate Similarly, when we gain weight, our body tries...

How Calories All Are Different, Explained

In this video, Jason Fung explains how and why all calories aren’t the same. The term ‘A Calorie is a Calorie’ assumes that only the amount of calories is important and not the type of calories. Yet different calories have different hormonal effects on our bodies which impacts their fattening effect.

Stop Counting Calories to Lose Weight | Part 2

In this video, Jason Fung shares why you should stop counting calories to lose weight because calorie counting just doesn’t work. Check out more videos on from Dr. Fung on his Youtube Channel

The Truth About Calories | Part 1

Dr. Jason Fung shares why calorie counting doesn’t work. Our hormones control how many calories we eat (Calories In) and our metabolic rate (Calories Out), so losing weight means we need to fix this hormonal imbalance, not just eat a few less calories.  Check out more videos on from Dr. Fung on his YouTube channel.

The Two Key Reasons Calorie Restricted Diets Fail

Calorie counting fails for weight loss and usually leads to long-term weight gain. This pattern of yo-yo dieting is a well-recognized danger of calorie restricted diets. Long-term calorie restriction diets result in two key adaptations that stymie further weight loss: Decreased Metabolic Rate Increased Hunger Successful long term weight loss and weight maintenance requires focusing...