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In The Obesity Code, Dr. Fung discusses why traditional diets for obesity don’t work for most people. He feels this is because the cause of obesity is that overweight people have hormonal differences from non-overweight people. To treat obesity and reach a healthy weight, says Dr. Fung, you have to treat the hormonal imbalance at its root. If you’ve noticed a pattern of recent weight gain in yourself or your child, or if you have a family history of obesity, you might want to take steps to intervene sooner rather than later. Examining your habits and making reasonable changes now can help you prevent future obesity and weight loss struggles. Fasting is when you restrict your intake of food and drink for a period of time. It’s a common part of some religious beliefs, but even if you’re not religious, you’ve probably practiced it at least a few times in your life without really thinking about it. For instance, your healthcare provider has likely told you to fast before having a medical procedure or blood test ( Sanvictores, 2021).
Obesity puts you at risk of certain adverse health conditions. That doesn’t mean you have those conditions right now. And it doesn't mean that you can’t do anything about them. The risks are worth your concern, but they’re also reversible or manageable. Your healthcare provider will encourage you to reduce them by losing weight. While it will be challenging, it can be done. This item receives a score of 0, indicating that the reference undermines the claim. The cited study seems to offer nothing to support the claim of birthweight increasing by half a pound over the last twenty-five years. In fact, it seems to investigate a related but distinctly different topic, which is the prevalence of neonatal macrosomia in Berlin. Neonatal macrosomia is a term used to describe newborns with a birthweight of greater than 4,000 grams (or 8 pounds, 13 ounces). The results of the study indicate that prevalence of neonatal macrosomia increased in Berlin between 1993 and 1999. This item would have only received a score of one had the study itself not contradicted the claim of birthweight increasing by 200 grams. According to the Bergmann paper “The prevalence of a birthweight of ≥4000 g increased significantly from 9.1% to 10.1%, although the mean birthweight remained relatively constant (3325 g in 1993, 3322 g in 1999).” Additionally, following the quote above in TOC, the book goes on to suggest that the reason for the increased weight gain in newborns could be due to pesticides in the food supply and cites a rodent study as evidence. However, the Bergmann paper also investigates the risk factors that are associated with neonatal macrosomia and pesticides are not mentioned; rather, other factors such as maternal age, height, smoking status, and diabetes, were mentioned as the potential risk factors. Reference 5 Reference The third claim received a score of 2 out of 4, indicating that it’s weakly supported by current evidence. TOC focuses on fasting studies from the 1960s that are interesting but use less rigorous designs and present data from only a few selected patients. We don’t have to rely on these studies because there have been many higher-quality modern scientific studies (randomized controlled trials) on intermittent fasting, and these have been collected into several meta – analyses (studies of studies). Some of these trials were published before TOC, others after. They generally show that intermittent fasting causes about as much weight loss as standard calorie restriction. Intermittent fasting is a legitimate way to control calorie intake and promote weight loss, but it does not appear to be superior to other approaches. TOC does not cite compelling evidence that it’s effective in the long term, and we are not aware that such evidence exists. This item receives a score of 3 indicating the intervention is likely to moderately improve the condition. Currently, not many studies on intermittent fasting last 6 months or more, but the available evidence suggests that it does cause weight loss. A 2018 systematic review of the literature included only six studies on intermittent fasting as a treatment for overweight and obesity, and only thre Some people claim to be able to shed 20 pounds or more in a month while intermittent fasting. However, we could not find users who experienced such drastic weight-loss after trying The Obesity Code diet plan. Improved Energy LevelsWhat about the diet of the Chinese in the 1980s? They were eating tons of white rice. On average, over 300 grams per day, compared to a low-carb diet of less than 50 grams and all highly refined. Yet they had virtually no obesity. Why? The intended audience for this book is not explicitly stated, but it appears to be intended for a general adult audience. Presumably the book is focused on those adults who are obese and are interested in losing weight, as suggested by the text on the cover: “Why you’ve never been able to lose weight, and how that can change now.” Criterion 3.1. Is the intervention likely to improve the target condition? The glycemic index helps identify good carbs and bad carbs. When a carb has a high glycemic index and load score, it is likely to have the greatest impact on your blood sugar. Ultimately, this means greater insulin levels. Dr. Jason Fung is the world’s leading expert on intermittent fasting and a low-carb diet. He specializes in treating type 2 diabetes. He has written three best-selling health books and co-founded the Intensive Dietary Management Program. He runs thefastingmethod.com, which advises on weight loss and managing blood sugar, focusing on low-carbohydrate diets and intermittent fasting. The Daily Mail has credited him as “the doctor who invented intermittent fasting.” Phentermine (Adipex-P®, Lomaira®, Suprenza®): Decreases your appetite. It’s approved for use for three months at a time.
Insulin is a fat-storing hormone. There’s nothing wrong with that – that is simply its job. When we eat, insulin goes up, signaling the body to store some food energy as body fat. When we don’t eat, then insulin goes down, signaling the body to burn this stored energy (body fat). Higher than usual insulin levels tell our body to store more food energy as body fat. Your metabolism is the process of converting calories into energy to fuel your body’s functions. When your body has more calories than it can use, it converts the extra calories into lipids and stores them in your adipose tissue (body fat). When you run out of tissue to store lipids in, the fat cells themselves become enlarged. Enlarged fat cells secrete hormones and other chemicals that produce an inflammatory response. Workforce changes. With industry changes trending toward automation and computers, more people now work at desks than on their feet. They also work longer hours.In The Obesity Code, Dr. Fung recommends occasional periods of fasting (intermittent fasting) alternated with periods of eating a low-carb or keto diet. Very low carbohydrate and high-fat diets such as the ketogenic diet have proven very effective for rapid weight loss ( Masood, 2021). As discussed above, available evidence shows that intermittent fasting does cause weight loss. However, the evidence also shows that the weight loss from intermittent fasting is comparable to that of standard calorie restriction, with some evidence suggesting fasting insulin is modestly reduced in intermittent fasters compared to those with daily caloric restriction. Essentially, someone’s food choice is their identity. It reflects them,” she said. “If someone comes in and tells you to change every aspect of your dietary patterns, one may be able to maintain that for a week, maybe a month, but at some point, you will abandon that diet or meal plan because you can’t recognize who you are anymore, making the extreme diet methods even more unsustainable and damaging.” The “insulin causes obesity” hypothesis is easily tested. If you give insulin to a random group of people, will they gain fat? The short answer is an emphatic “Yes!” Patients who use insulin regularly and physicians who prescribe it already know the awful truth: the more insulin you give, the more weight people gain. Numerous studies have already demonstrated this fact. Insulin causes weight gain. Examples of limitations include bodybuilders and athletes, who have more muscle and may have higher BMI scores even though their fat levels are low. It’s also possible to have obesity at a “normal” weight. If your body weight is average but your body fat percentage is high, you may have the same health risks as somebody with a higher BMI.
However, exercising after not eating for several days in a row is difficult because the body is starved of energy. Plus, if a person pushes themselves too hard with such little energy, they could become hurt a lot easier. The Obesity Code Food ListWe randomly selected ten references in TOC and scored how well they support the passages associated with them. The book received a score of 2.9 out of 4 in our reference accuracy metric. The book tends to maintain reasonable fidelity to the source material from which it draws conclusions, with some notable exceptions that reduced the overall score. This item received a score of 0 out of 4, indicating that the strength of the claim is greatly overstated. The claim is refuted by a large volume of compelling evidence, including several studies cited in TOC itself, which we reviewed above. Overall (average) score for claim 1 Together, these combined risk factors are known as metabolic syndrome. They are grouped together because they all tend to reinforce each other. They also reinforce further weight gain and make it harder to lose weight and sustain weight loss. Metabolic syndrome is a common factor in obesity and contributes to many related diseases, including:
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