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Top 50 Jason Fung Quotes (2024 Update)

Jason Fung Quote: “OBESITY IS NOT caused by an excess of calories, but instead by a body set weight that is too high because of a hormonal imbalance in the body.”

1. “OBESITY IS NOT caused by an excess of calories, but instead by a body set weight that is too high because of a hormonal imbalance in the body.”

Jason Fung Quote: “All the conditions we thought were problems – obesity, insulin resistance, and beta cell dysfunction – are actually the body’s solutions to a single root cause – too much sugar.”

2. “All the conditions we thought were problems – obesity, insulin resistance, and beta cell dysfunction – are actually the body’s solutions to a single root cause – too much sugar.”

Jason Fung Quote: “A recent study suggests that 75 per cent of the weight-loss response in obesity is predicted by insulin levels.29 Not willpower. Not caloric intake. Not peer support or peer pressure. Not exercise. Just insulin.”

3. “A recent study suggests that 75 per cent of the weight-loss response in obesity is predicted by insulin levels.29 Not willpower. Not caloric intake. Not peer support or peer pressure. Not exercise. Just insulin.”

Jason Fung Quote: “Metabolic syndrome, of which obesity and type 2 diabetes are a key part, are ultimately caused by – you guessed it – too much sugar.”

4. “Metabolic syndrome, of which obesity and type 2 diabetes are a key part, are ultimately caused by – you guessed it – too much sugar.”

Jason Fung Quote: “Fasting, by taking a completely different approach, is much easier to understand. It is so simple that it can be explained in two sentences: Eat nothing. Drink water, tea, coffee, or bone broth. That’s it.”

5. “Fasting, by taking a completely different approach, is much easier to understand. It is so simple that it can be explained in two sentences: Eat nothing. Drink water, tea, coffee, or bone broth. That’s it.”

Jason Fung Quote: “Hunger is a state of mind, not a state of stomach.”

6. “Hunger is a state of mind, not a state of stomach.”

Jason Fung Quote: “IF YOU WANT to avoid weight gain, remove all added sugars from your diet. On.”

7. “IF YOU WANT to avoid weight gain, remove all added sugars from your diet. On.”

Jason Fung Quote: “Obesity is a hormonal disorder of fat regulation. Insulin is the major hormone that drives weight gain, so the rational therapy is to lower insulin levels.”

8. “Obesity is a hormonal disorder of fat regulation. Insulin is the major hormone that drives weight gain, so the rational therapy is to lower insulin levels.”

Jason Fung Quote: “But diet and exercise are not fifty-fifty partners like macaroni and cheese. Diet is Batman and exercise is Robin. Diet does 95 per cent of the work and deserves all the attention; so, logically, it would be sensible to focus on diet. Exercise is still healthy and important – just not equally important. It has many benefits, but weight loss is not among them. Exercise is like brushing your teeth. It is good for you and should be done every day. Just don’t expect to lose weight.”

9. “But diet and exercise are not fifty-fifty partners like macaroni and cheese. Diet is Batman and exercise is Robin. Diet does 95 per cent of the work and deserves all the attention; so, logically, it would be sensible to focus on diet. Exercise is still healthy and important – just not equally important. It has many benefits, but weight loss is not among them. Exercise is like brushing your teeth. It is good for you and should be done every day. Just don’t expect to lose weight.”

Jason Fung Quote: “A little starvation can really do more for the average sick man than can the best medicines and the best doctors. – Mark Twain.”

10. “A little starvation can really do more for the average sick man than can the best medicines and the best doctors. – Mark Twain.”

Jason Fung Quote: “A fourteen-day fast delivers seven times the benefit of a two-day fast but is only marginally more difficult. Seven-.”

11. “A fourteen-day fast delivers seven times the benefit of a two-day fast but is only marginally more difficult. Seven-.”

Jason Fung Quote: “Refined carbohydrates are easy to become addicted to and overeat precisely because there are no natural satiety hormones for refined carbs. The reason, of course, is that refined carbohydrates are not natural foods but are highly processed. Their toxicity lies in that processing. p101.”

12. “Refined carbohydrates are easy to become addicted to and overeat precisely because there are no natural satiety hormones for refined carbs. The reason, of course, is that refined carbohydrates are not natural foods but are highly processed. Their toxicity lies in that processing. p101.”

Jason Fung Quote: “The price of fasting is zero.”

13. “The price of fasting is zero.”

Jason Fung Quote: “We are wired for feast and famine, not feast, feast, feast.”

14. “We are wired for feast and famine, not feast, feast, feast.”

Jason Fung Quote: “The basics of good nutrition can be summarized in these simple rules. Eat whole, unprocessed foods. Avoid sugar. Avoid refined grains. Eat a diet high in natural fats. Balance feeding with fasting. !”

15. “The basics of good nutrition can be summarized in these simple rules. Eat whole, unprocessed foods. Avoid sugar. Avoid refined grains. Eat a diet high in natural fats. Balance feeding with fasting. !”

Jason Fung Quote: “Diet is Batman and exercise is Robin. Diet does 95 percent of the work and deserves all the attention; so, logically, it would be sensible to focus on diet. Exercise is still healthy and important – just not equally important. It has many benefits, but weight loss is not among them.”

16. “Diet is Batman and exercise is Robin. Diet does 95 percent of the work and deserves all the attention; so, logically, it would be sensible to focus on diet. Exercise is still healthy and important – just not equally important. It has many benefits, but weight loss is not among them.”

Jason Fung Quote: “If you feast, you must fast. That.”

17. “If you feast, you must fast. That.”

Jason Fung Quote: “Fasting is not so much a treatment for illness but a treatment for wellness. The.”

18. “Fasting is not so much a treatment for illness but a treatment for wellness. The.”

Jason Fung Quote: “Fasting: Improves mental clarity and concentration Induces weight and body fat loss.”

19. “Fasting: Improves mental clarity and concentration Induces weight and body fat loss.”

Jason Fung Quote: “Even the National Cholesterol Education Program admits, “The percentage of total fat in the diet, independent of caloric intake, has not been documented to be related to body weight.”

20. “Even the National Cholesterol Education Program admits, “The percentage of total fat in the diet, independent of caloric intake, has not been documented to be related to body weight.”

Jason Fung Quote: “The government is subsidizing, with our own tax dollars, the very foods that are making us obese. Obesity is effectively the result of government policy.”

21. “The government is subsidizing, with our own tax dollars, the very foods that are making us obese. Obesity is effectively the result of government policy.”

Jason Fung Quote: “Feast and fast. It has been easy for me to maintain my weight loss and health since.”

22. “Feast and fast. It has been easy for me to maintain my weight loss and health since.”

Jason Fung Quote: “Let’s face the truth. Low-calorie diets have been tried again and again and again. They fail every single time.”

23. “Let’s face the truth. Low-calorie diets have been tried again and again and again. They fail every single time.”

Jason Fung Quote: “Fasting has no upper limit. In the 1970s, a twenty-seven-year-old Scottish man started fasting at a weight of 456 pounds. Over the next 382 days, he subsisted on only noncaloric fluids, a daily multivitamin, and various.”

24. “Fasting has no upper limit. In the 1970s, a twenty-seven-year-old Scottish man started fasting at a weight of 456 pounds. Over the next 382 days, he subsisted on only noncaloric fluids, a daily multivitamin, and various.”

Jason Fung Quote: “Once we understand that obesity is a hormonal imbalance, we can begin to treat it. If we believe that excess calories cause obesity, then the treatment is to reduce calories. But this method has been a complete failure. However, if too much insulin causes obesity, then it becomes clear we need to lower insulin levels.”

25. “Once we understand that obesity is a hormonal imbalance, we can begin to treat it. If we believe that excess calories cause obesity, then the treatment is to reduce calories. But this method has been a complete failure. However, if too much insulin causes obesity, then it becomes clear we need to lower insulin levels.”

Jason Fung Quote: “These studies all came to the same startling conclusion: the low-carb diet was significantly better for weight loss than the low-fat diet. Even more stunning was that all the important risk factors for cardiovascular disease – including cholesterol, blood sugar level, and blood pressure – were also much improved on the low-carb diet.”

26. “These studies all came to the same startling conclusion: the low-carb diet was significantly better for weight loss than the low-fat diet. Even more stunning was that all the important risk factors for cardiovascular disease – including cholesterol, blood sugar level, and blood pressure – were also much improved on the low-carb diet.”

Jason Fung Quote: “If you reduce your consumption of flour and refined grains, you will substantially improve your weight-loss potential. White.”

27. “If you reduce your consumption of flour and refined grains, you will substantially improve your weight-loss potential. White.”

Jason Fung Quote: “What would happen if the body continued to expend 3000 calories daily while taking in only 1500? Soon fat stores would be burned, then protein stores would be burned, and then you would die. Nice. The smart course of action for the body is to immediately reduce caloric expenditure to 1500 calories per day to restore balance. Caloric.”

28. “What would happen if the body continued to expend 3000 calories daily while taking in only 1500? Soon fat stores would be burned, then protein stores would be burned, and then you would die. Nice. The smart course of action for the body is to immediately reduce caloric expenditure to 1500 calories per day to restore balance. Caloric.”

Jason Fung Quote: “Interestingly, I’ve seen the highest success rates with husbands and wives who try fasting together: the mutual support is a big help and makes fasting far easier.”

29. “Interestingly, I’ve seen the highest success rates with husbands and wives who try fasting together: the mutual support is a big help and makes fasting far easier.”

Jason Fung Quote: “Consider the term breakfast. The word refers to the meal that “breaks your fast” – which is done daily. The word itself implicitly acknowledges that fasting, far from being some sort of cruel and unusual punishment, is performed daily, even if only for a short duration. It is not something strange but a part of everyday life.”

30. “Consider the term breakfast. The word refers to the meal that “breaks your fast” – which is done daily. The word itself implicitly acknowledges that fasting, far from being some sort of cruel and unusual punishment, is performed daily, even if only for a short duration. It is not something strange but a part of everyday life.”

Jason Fung Quote: “Because consistently high insulin levels are the root cause of all the diseases of metabolic syndrome, it’s especially important for those with metabolic syndrome to consider how foods stimulate the release of insulin.”

31. “Because consistently high insulin levels are the root cause of all the diseases of metabolic syndrome, it’s especially important for those with metabolic syndrome to consider how foods stimulate the release of insulin.”

Jason Fung Quote: “Fasting gets more manageable over time as your body adapts to fueling itself with body fat rather than food.”

32. “Fasting gets more manageable over time as your body adapts to fueling itself with body fat rather than food.”

Jason Fung Quote: “The root cause of the hyperglycemia in type 2 diabetes is high insulin resistance.”

33. “The root cause of the hyperglycemia in type 2 diabetes is high insulin resistance.”

Jason Fung Quote: “Simplistic arguments that “Carbs make you fat!” or “Calories make you fat!” or “Red meat makes you fat!” or “Sugar makes you fat!” do not fully capture the complexity of human obesity. The.”

34. “Simplistic arguments that “Carbs make you fat!” or “Calories make you fat!” or “Red meat makes you fat!” or “Sugar makes you fat!” do not fully capture the complexity of human obesity. The.”

Jason Fung Quote: “The key to the proper treatment of type 2 diabetes is to get rid of the excess sugar, not just move it around the body. The problem is both too much glucose and too much insulin.”

35. “The key to the proper treatment of type 2 diabetes is to get rid of the excess sugar, not just move it around the body. The problem is both too much glucose and too much insulin.”

Jason Fung Quote: “In 1960, we ate three meals a day. There wasn’t much obesity. In 2014, we eat six meals a day. There is an obesity epidemic. So, do you really think we should eat six meals day? While.”

36. “In 1960, we ate three meals a day. There wasn’t much obesity. In 2014, we eat six meals a day. There is an obesity epidemic. So, do you really think we should eat six meals day? While.”

Jason Fung Quote: “If the situation is getting worse, then the only logical explanation is that our understanding and treatment of type 2 diabetes is fundamentally flawed.”

37. “If the situation is getting worse, then the only logical explanation is that our understanding and treatment of type 2 diabetes is fundamentally flawed.”

Jason Fung Quote: “Too often, our current model of obesity assumes that there is only one single true cause, and that all others are pretenders to the throne. Endless debates ensue. Too many calories cause obesity. No, too many carbohydrates. No, too much saturated fat. No, too much red meat. No, too much processed foods. No, too much high fat dairy. No, too much wheat. No, too much sugar. No, too much highly palatable foods. No, too much eating out. It goes on and on. They are all partially correct.”

38. “Too often, our current model of obesity assumes that there is only one single true cause, and that all others are pretenders to the throne. Endless debates ensue. Too many calories cause obesity. No, too many carbohydrates. No, too much saturated fat. No, too much red meat. No, too much processed foods. No, too much high fat dairy. No, too much wheat. No, too much sugar. No, too much highly palatable foods. No, too much eating out. It goes on and on. They are all partially correct.”

Jason Fung Quote: “Coffee, even the decaffeinated version, appears to protect against type 2 diabetes. In a 2009 review, each additional daily cup of coffee lowered the risk of diabetes by 7 percent, even up to six cups per day.23.”

39. “Coffee, even the decaffeinated version, appears to protect against type 2 diabetes. In a 2009 review, each additional daily cup of coffee lowered the risk of diabetes by 7 percent, even up to six cups per day.23.”

Jason Fung Quote: “Fasting induces autophagy – a cellular process that helps the body clear out old or damaged cell parts –.”

40. “Fasting induces autophagy – a cellular process that helps the body clear out old or damaged cell parts –.”

Jason Fung Quote: “Indeed, some leading scientists, such as Dr. Thomas Seyfried, a professor of biology at Boston College, have proposed a yearly seven-day water-only fast for this very reason.”

41. “Indeed, some leading scientists, such as Dr. Thomas Seyfried, a professor of biology at Boston College, have proposed a yearly seven-day water-only fast for this very reason.”

Jason Fung Quote: “Try to physically remove yourself from all food stimuli during a fast. Cooking a meal or even just seeing and smelling food while fasting is almost unbearably difficult. This is not simply a matter of weak willpower. Our cephalic phase responses are fully activated, and to feel those responses without actually eating is like trying to stop a piranha feeding frenzy. This, of course, is the same reason you should not shop for food when hungry, or keep snacks in the pantry.”

42. “Try to physically remove yourself from all food stimuli during a fast. Cooking a meal or even just seeing and smelling food while fasting is almost unbearably difficult. This is not simply a matter of weak willpower. Our cephalic phase responses are fully activated, and to feel those responses without actually eating is like trying to stop a piranha feeding frenzy. This, of course, is the same reason you should not shop for food when hungry, or keep snacks in the pantry.”

Jason Fung Quote: “Throughout most of human history, obesity has been rare. Individuals in traditional societies eating traditional diets seldom became obese, even in times of abundant food. As.”

43. “Throughout most of human history, obesity has been rare. Individuals in traditional societies eating traditional diets seldom became obese, even in times of abundant food. As.”

Jason Fung Quote: “For longer fasts, it is a good idea to take a general multivitamin. The longest fast recorded lasted 382 days, and a simple multivitamin prevented any vitamin deficiencies.”

44. “For longer fasts, it is a good idea to take a general multivitamin. The longest fast recorded lasted 382 days, and a simple multivitamin prevented any vitamin deficiencies.”

Jason Fung Quote: “Therefore, the hormonal theory of obesity takes shape: chronically high cortisol raises insulin levels, which in turn leads to obesity.”

45. “Therefore, the hormonal theory of obesity takes shape: chronically high cortisol raises insulin levels, which in turn leads to obesity.”

Jason Fung Quote: “Illicit drugs like heroin cause a particularly powerful surge of dopamine in the brain. Sugar does exactly the same thing.”

46. “Illicit drugs like heroin cause a particularly powerful surge of dopamine in the brain. Sugar does exactly the same thing.”

Jason Fung Quote: “Instead, we believe that the fault lies in ourselves. We feel we have failed. Some silently criticize us for not adhering to the diet. Others silently think we have no willpower and offer us meaningless platitudes. Sound familiar? The failing isn’t ours. The portion-control caloric-reduction diet is virtually guaranteed to fail. Eating less does not result in lasting weight loss.”

47. “Instead, we believe that the fault lies in ourselves. We feel we have failed. Some silently criticize us for not adhering to the diet. Others silently think we have no willpower and offer us meaningless platitudes. Sound familiar? The failing isn’t ours. The portion-control caloric-reduction diet is virtually guaranteed to fail. Eating less does not result in lasting weight loss.”

Jason Fung Quote: “Fasting carries significant health benefits. Metabolism increases, energy increases and blood sugars decrease. The only remaining question is this: Can you do it? I hear this one all the time. Absolutely, 100 percent yes. In fact, fasting has been a part of human culture since the dawn of our species.”

48. “Fasting carries significant health benefits. Metabolism increases, energy increases and blood sugars decrease. The only remaining question is this: Can you do it? I hear this one all the time. Absolutely, 100 percent yes. In fact, fasting has been a part of human culture since the dawn of our species.”

Jason Fung Quote: “There’s a simple answer to the question of what to eat at snack time. Nothing. Don’t eat snacks. Period. Simplify your life.”

49. “There’s a simple answer to the question of what to eat at snack time. Nothing. Don’t eat snacks. Period. Simplify your life.”

Jason Fung Quote: “There are an almost infinite number of ways that the body can dissipate excess energy instead of storing it as body fat.”

50. “There are an almost infinite number of ways that the body can dissipate excess energy instead of storing it as body fat.”

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