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Dr. Jason Fung: Fasting as a Therapeutic Option for Weight Loss

Dr. Jason Fung: Fasting as a Therapeutic Option for Weight Loss
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Dr. Jason Fung, MD, is a nephrologist and expert in the use of intermittent fasting and low-carbohydrate diets for the treatment of Type 2 diabetes. In this presentation, delivered on Aug. 2, 2018, at the 2018 CrossFit Health Conference in Madison, Wisconsin, Fung shares his first-hand experiences with “The Mess” and discusses how he shifted his research and medical practices as a result of those experiences.

Fung’s objectives for his presentation include:
1. Understanding why long-term weight loss is so difficult.
2. Introducing the concept of therapeutic fasting.
3. Understanding some myths and misunderstandings associated with the fasting process.

He recalls treating obese and diabetic patients with traditional methods, which included what he characterizes as poor dietary recommendations and a slurry of drugs. He explains, “It became obvious that I’m just sort of holding their hand until they get their heart attack, until they get dialysis, until they go blind, until we chop their feet off.”

“It’s really sad to realize that the profession that you’ve chosen is not really helping people,” he says. This realization compelled him to diagnose the problems associated with traditional care and seek alternative treatment methods for his patients.

Fung historicizes what he calls “the modern eating pattern,” which emerged in 1977 in the U.S. with the development of the Dietary Guidelines for Americans. He notes the 1977 guidelines led to the consumption of more grains and sugars, which in turn led to people “eating often, eating late, and eating all the time.”

Incidences of obesity and Type 2 diabetes reached epidemic levels, and the most common treatments long have been drug interventions. Unfortunately, the prevailing non-pharmaceutical prescription — to eat less and move more — has a 99.9% failure rate. Fung observes that popular wisdom tells us to blame the patient and assume he or she did not adhere to the prescription. He claims a basic understanding of metabolism suggests otherwise, however.

Fung explains why a significant reduction in caloric intake leads to a decrease in basal metabolism. This biological inevitability is ignored by the proponents of the “calories in, calories out” fallacy, he observes.

He also explains why intermittent fasting is an effective alternative to traditional treatments for obesity and diabetes. The modern eating pattern keeps our insulin levels high all the time as we eat over long durations, and when insulin remains high all the time, Fung explains, our bodies store food energy as fat, and we remain hungry.

Intermittent fasting, on the other hand, allows insulin levels to drop, which puts us in burning mode rather than storing mode.
Fung claims his recommendations are so effective that patients no longer need to say, “Oh wow, I have to go see my doctor to see what pill I need,” or, “I need to go see my doctor to see if he needs to stick a stent in me.” Instead, Fung explains, “We’re giving you the power to take back your own health, because you’re not gonna get it from anywhere else.”

CrossFit® – Forging Elite Fitness® (https://www.crossfit.com/)

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  1. Adf and extended fasts have done WONDERS for me. The dieticians kept saying “you need to eat three meals and two snacks a day, otherwise you’ll binge”. And I kept saying “that isn’t true for me! I’m even hungrier if I eat like that, even if I eat whole foods and balance macros,etc! Eating just begets more eating for me!” And they kept saying “no, no…that’s all psychological, that’s just not possible, you need to just keep doing what we tell you or we won’t work with you”. Looks like there actually is some science to back up what I was going through!

  2. Thank you Dr Ekberg … Very informative and comprehensive … my name is Denziel … I wondered if you might be able to help … I live in the UK and I wondered if there’s a doctor practice you’re able to recommend to help me with diabetes in West London UK ?

  3. I’m presently struggling with my weight. It got so bad during the quarantine and it’s all starting to catch up to me. I’m about 265 now, I had a blood test done. Luckily I am pre-pre-diabetic. How do I start? Do I just start fasting right off the bat?

  4. Weight loss and LBM loss as well. Really pains me listening to Fung manipulate the truth for his own agenda (money). If you're a cross fit athlete you should be eating good healthy carbs. 1000s of studies our there showing a healthy balanced diet is needed for intense activity. Dr Frung is a massive fraud.

  5. Dr. Fung, You are FABULOUS!! A few years ago I FINALLY got some 'EUREKA' information from 'BUTTER BOB' who was online. He is the one that turned my life around by his weight loss of 154 pounds by eating more fats, and describing insulin as being the problem. Your talk just reinforced all that I have learned to date. I now am on 'Keto' to lose my weight and making great progress! I follow every Youtube article that you provide!! God Bless!!

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