Busting nutrition myths

Common myths about nutrition and fitness

2/25/202416 min read

a group of oranges and limes cut in half
a group of oranges and limes cut in half

Dietitians with an immature central nervous system, nutritionists with two-week courses, and girls over 120kg are prohibited from viewing 🚫 without professional supervision.

It's dangerous for worldview and psychological state 👻.

Fat burners don't burn fat

It's crucial to understand that fat burners don't directly incinerate fat reserves in the body. Rather, they operate by stimulating the central nervous system to elevate activity levels like a loan before a New Year's default. Chromium doesn't suppress appetite, Tribulus doesn't increase testosterone.

"Fat burning" supplements often contain ingredients such as caffeine, green tea extract, and yohimbine, which exert stimulatory effects on the body. While they may temporarily boost energy expenditure, they don't specifically target fat cells for breakdown [1]. Furthermore, the increased activity prompted by fat burners can lead to elevated heart rate, jitteriness, and disrupted sleep patterns in some individuals [2]. Sustainable fat loss is best achieved through a balanced diet, regular exercise, and lifestyle modifications tailored to individual needs. Always consult with a healthcare professional before incorporating fat burners or any "strong" supplements into your regimen to ensure safety and effectiveness.

Official medicine is allowed to prescribe only two drugs for weight loss. Both have more than 50 side effects, and the most unpleasant one is 💀.

Ozempic: Silver Bullet for Fat Burning?

In the landscape of weight management and fat loss, Ozempic, also known as semaglutide, emerges as a compelling option. Originally developed as a treatment for type 2 diabetes, Ozempic has garnered attention for its potential as a tool for fat burning.

One of the primary mechanisms through which Ozempic operates is by mimicking the action of the hormone GLP-1 in the body. GLP-1 plays a crucial role in regulating glucose metabolism and appetite. By acting on GLP-1 receptors in the brain, Ozempic helps to increase feelings of fullness (satiety) and decrease hunger, thereby reducing caloric intake and aiding in weight loss. [3].

Scientific evidence supports the appetite-suppressing effects of Ozempic. Clinical trials have consistently demonstrated its ability to promote weight loss among individuals with type 2 diabetes, as well as in non-diabetic individuals with obesity [4].

For example, the STEP trials (Semaglutide Treatment Effect in People with obesity) showed that treatment with Ozempic led to significant reductions in body weight compared to placebo, with many participants achieving clinically meaningful weight loss.

Beyond its primary function in diabetes management, Ozempic has shown promise in facilitating fat burning. Studies suggest that the medication can help individuals shed excess fat, particularly visceral fat, which is associated with increased risk of chronic diseases such as heart disease and diabetes [5].

In addition to its effects on appetite regulation, Ozempic also influences other metabolic processes that contribute to weight loss. It enhances insulin secretion, improves insulin sensitivity, and reduces glucose production in the liver, all of which contribute to better blood sugar control and metabolic balance.

By targeting fat accumulation and promoting weight loss, Ozempic may contribute to improvements in overall health and reduce the risk of obesity-related complications, including cardiovascular disease and metabolic disorders.

However, Ozempic is not a miracle solution:

  1. Side Effects: Like many medications, Ozempic can cause side effects such as nausea, vomiting, diarrhea, and gastrointestinal discomfort, particularly during the initial stages of treatment. These side effects may lead to treatment discontinuation or reduced adherence over time [6].

  2. Limited Long-Term Efficacy: While Ozempic may lead to significant weight loss in the short term, studies have shown that its effectiveness may diminish over time [7].

  1. Yo-yo: It is a common pattern for most individuals to regain weight once they discontinue the medication as they are unable to maintain lifestyle changes alongside treatment.

  2. Cost and Accessibility: Affordability may pose a challenge for some individuals, as Ozempic may be more expensive compared to other weight loss medications or interventions and much more expensive than simply being more active and eating less.

  3. Not a Substitute for Lifestyle Changes: While Ozempic can aid in weight loss, it should not be viewed as a quick solution for fat burning. Sustainable weight loss and maintenance require long-term changes in diet, physical activity, and behavior. Ozempic should be used as part of a comprehensive weight management plan for medical purposes that includes healthy lifestyle modifications.

  4. The effectiveness of Ozempic as a fat-burning tool may vary among individuals, depending on factors such as lifestyle habits, underlying health conditions, and genetic predispositions.

In summary, Ozempic offers potential benefits as a tool for reducing hunger and aiding in weight loss, particularly for individuals with type 2 diabetes or obesity.

In addition, its ability to promote weight loss, target fat accumulation, and potentially improve overall health makes it a compelling option for individuals striving to achieve their weight loss goals.

However, its limitations, including limited long-term efficacy and the need for lifestyle changes, underscore the importance of considering it within the context of a broader weight management strategy. Individuals considering Ozempic should consult with their healthcare provider to assess its suitability and explore comprehensive approaches to achieving and maintaining a healthy weight.

Metabolism Can't Be Slowed Down or Broken

Metabolism can't be slowed down, broken, or damaged. There's no genetic predisposition to the ideal form, naturally spherical. You simply have uniform eating habits and justifications.

Metabolism, the complex process by which our bodies convert food into energy, is regulated by a variety of factors including age, sex, body composition, and hormonal balance. While certain circumstances such as extreme calorie restriction or prolonged fasting may temporarily lower metabolic rate as a survival mechanism, the body generally adapts to maintain energy balance and preserve vital functions [8].

Research into the genetics of obesity, for instance, has identified numerous genetic variants associated with adiposity and metabolic regulation. However, these genetic predispositions do not predetermine an individual's weight or shape but rather interact with environmental factors to shape overall body composition.

Furthermore, the concept of "metabolic damage" or deliberate slowing down of metabolism through dieting or extreme caloric restriction is not supported by scientific evidence [9].

While adaptive changes in metabolic rate may occur in response to calorie deficits, the body typically adjusts to preserve energy balance and physiological functions [10]. Metabolic adaptation, characterized by alterations in hormone levels and energy expenditure, serves as a survival mechanism to mitigate the effects of prolonged energy deficits.

In essence, while genetics contribute to individual variations in metabolism and body composition, lifestyle factors and environmental influences play a pivotal role in shaping overall health and fitness outcomes. By prioritizing proper nutrition, regular physical activity, and healthy lifestyle habits, individuals can optimize their metabolic health and work towards achieving their personal fitness goals regardless of "genetic predispositions".

Remember, sustainable changes take time, consistency, and a holistic approach to overall well-being. Always consult with professionals for personalized guidance on optimizing metabolic health and achieving long-term fitness success.

You Can Eat After 6:00 PM

Restricting late eating was popularized over time. However, it lacks substantial scientific evidence and can be debunked with a closer look at human metabolism and nutritional science.

The concept of restricting eating time in the evening likely stems from the belief that consuming calories late at night leads to weight gain. However, modern research challenges this notion, revealing that the timing of food consumption has minimal impact on weight loss compared to overall caloric intake and macronutrient composition [11].

Numerous studies have investigated the relationship between meal timing and weight management, with findings suggesting that total daily energy intake and expenditure play a more significant role in determining body weight than the timing of meals. In other words, it's the total amount of calories consumed throughout the day, rather than when they are consumed, that ultimately influences weight loss or gain.

A landmark study published in the journal Obesity Reviews examined the effects of meal timing on weight loss and metabolic health. The review concluded that while some studies suggest potential benefits of earlier meal timing, the overall evidence is inconclusive, and any observed effects are likely modest and vary among individuals [12].

Furthermore, the idea of a specific cutoff time for eating overlooks the importance of individual differences in circadian rhythms, lifestyle factors, and dietary preferences. What works for one person may not necessarily work for another. For some individuals, eating later in the evening may align better with their schedule and personal preferences without adversely affecting weight loss progress [13].

While the timing of meals before bedtime may not be a definitive factor in weight loss, there are scientifically proven benefits to avoiding heavy or large meals right before going to sleep:

1. Improved Sleep Quality: Eating close to bedtime can disrupt sleep patterns and lead to discomfort like indigestion and acid reflux, impacting sleep quality.

2. Enhanced Digestion and Metabolism: Large meals before bed may overload the digestive system, potentially leading to metabolic disturbances over time.

3. Reduced Risk of Acid Reflux and Heartburn: Avoiding heavy, acidic, or spicy foods before bed can minimize the risk of acid reflux and heartburn, especially when lying down.

4. Supports Blood Sugar Regulation: Eating sugary or high-carb foods late at night can cause blood sugar fluctuations, disrupting sleep patterns and contributing to insulin resistance.

5. Promotes Weight Maintenance: Avoiding late-night snacking helps prevent unnecessary calorie intake above the desired target.

In conclusion, the myth of limiting eating time to 6 PM for fat loss lacks scientific substantiation and oversimplifies the complex nature of human metabolism and dietary behavior. Rather than fixating on arbitrary rules about meal timing, individuals should focus on cultivating a balanced and sustainable approach to nutrition that supports their health goals and lifestyle preferences. By prioritizing overall dietary quality, portion control, and consistent physical activity, individuals can achieve lasting success in their weight loss journey without rigid restrictions on when they eat.

🍌 Bananas After a Workout: Overrated

Why? To restore energy? Okay. Fructose replenishes liver glycogen, which doesn't convert into muscle glycogen. Potassium for muscles? Okay. Spinach has three times more.

For decades, gym-goers and fitness enthusiasts have been led to believe in the concept of the "anabolic window" – a narrow timeframe post-exercise during which consuming nutrients is purportedly essential for maximizing muscle gain and recovery. However, recent scientific evidence challenges this notion, suggesting that the emphasis on immediate post-workout nutrition may be overstated and, in many cases, unnecessary.

The theory behind the anabolic window posits that following intense exercise, the body's muscles are primed to absorb nutrients rapidly, facilitating muscle repair, growth, and recovery. Consequently, proponents of this theory advocate for consuming a combination of protein and carbohydrates immediately after a workout to capitalize on this supposed window of opportunity.

However, research in exercise physiology and sports nutrition has shed light on the limitations of the anabolic window concept. Multiple studies have shown that the timing of nutrient intake post-exercise may not be as critical as once believed. In fact, recent meta-analyses and systematic reviews have failed to find significant differences in muscle growth or performance when comparing immediate post-workout nutrition with nutrient consumption within a few hours after exercise [14].

Moreover, the body's ability to replenish glycogen stores and initiate muscle repair processes extends well beyond the immediate post-workout period. Muscle protein synthesis, the process by which muscle fibers rebuild and grow stronger, remains elevated for several hours following exercise, suggesting that the body continues to benefit from nutrient intake throughout this time frame.

Furthermore, the specific composition of post-workout nutrition may be less important than previously thought. While protein is essential for muscle repair and growth, the timing of protein consumption appears to be more flexible than originally believed. As long as individuals consume an adequate amount of protein throughout the day, they can support muscle protein synthesis and recovery effectively, regardless of when they consume it relative to their workout[15].

So, why has the myth of the anabolic window persisted for so long? Much of it can be attributed to marketing hype and outdated beliefs perpetuated within the fitness industry. Manufacturers of sports nutrition products have capitalized on the idea of the anabolic window to market specialized post-workout supplements, protein shakes, and bars, promising superior results and faster gains.

While there may be benefits to consuming nutrients after a workout, especially for individuals engaged in prolonged or high-intensity exercise, the urgency and strict time constraints associated with the anabolic window are largely exaggerated. For most recreational exercisers and fitness enthusiasts, focusing on overall dietary quality, nutrient timing throughout the day, and meeting daily protein and carbohydrate needs is more important than obsessing over a banana or protein bar in the cramped, malodorous changing room amidst sweaty backs.

In conclusion, the myth of the anabolic window represents a prime example of misinformation in the fitness industry. While nutrient intake after exercise plays a role in supporting recovery and muscle growth, the concept of a narrow window of opportunity for post-workout nutrition is largely unfounded. By understanding the broader principles of sports nutrition and exercise physiology, individuals can make informed decisions about their dietary habits and optimize their fitness outcomes without succumbing to outdated myths and misconceptions.

Fruits 🍉 Are Not a Vitamin Vault; Vegetables Are Better

Fruits have long been celebrated for their vibrant colors, juicy sweetness, and perceived health benefits. However, when it comes to packing a nutritional punch, vegetables emerge as the true superheroes of the plant kingdom. While fruits offer essential vitamins and minerals, they often fall short in comparison to their leafy, cruciferous counterparts.

Nutrient Density in Vegetables:

Leafy greens such as kale, spinach, and Swiss chard are renowned for their exceptional nutrient density. According to the United States Department of Agriculture (USDA), 100 grams of raw spinach contains approximately 47% of the recommended daily allowance (RDA) of vitamin C, 188% of vitamin A, and 604% of vitamin K. Cruciferous vegetables like broccoli, cauliflower, and Brussels sprouts also offer impressive nutritional profiles, with significant amounts of vitamins A, C, and K, as well as minerals like calcium and iron [16].

Phytonutrients and Antioxidants:

Vegetables provide a diverse array of phytonutrients and antioxidants that support immune function and combat oxidative stress. According to research published in the journal Nutrients, the phytonutrients found in vegetables, such as flavonoids and carotenoids, have been linked to a reduced risk of chronic diseases, including cardiovascular disease and certain cancers.

Colorful Pigments and Antioxidant Properties:

The colorful pigments found in vegetables, such as beta-carotene in carrots and lycopene in tomatoes, serve as potent antioxidants that neutralize harmful free radicals in the body. Studies have shown that increasing consumption of antioxidant-rich vegetables can help reduce inflammation and oxidative damage, promoting overall health and longevity.

Moderating Fruit Consumption:

While fruits contain essential vitamins and minerals, they also come with a significant amount of natural sugars. According to the American Heart Association, excess sugar consumption, even from natural sources like fruits, can contribute to weight gain and increase the risk of chronic diseases such as diabetes and heart disease [17]. Therefore, it's important to moderate fruit intake and prioritize vegetables as the cornerstone of a healthy diet.

Incorporating a variety of vegetables into your daily meals provides a broad spectrum of nutrients essential for optimal health and vitality. Aim to fill half your plate with colorful vegetables at every meal, choosing a rainbow of hues to ensure a diverse range of vitamins and minerals.

Fruit: Whole vs. Smoothie/Juice

Many individuals believe that indulging in freshly squeezed 100% fruit juices provides a quick boost of essential vitamins. But, is this perception accurate? And what impact do these juices have on our blood sugar and insulin levels?

Freshly squeezed fruit juice has become a cornerstone of many diets, particularly for those individuals who prioritize convenience over meal preparation while maintaining a focus on healthy eating.

Proponents of fruit juices often tout their weight loss and detoxifying properties, claiming they aid in body cleansing and toxin removal.

This widespread belief in the health benefits of fruit juices has led to a flourishing and lucrative juice industry. In fact, the global fruit and vegetable juice market reached a valuation of US$154 billion in 2016 and continues to expand.

However, the question remains: are fruit juices truly as advantageous as commonly perceived?

Fructose, a naturally occurring sugar, is present in all fruits and fruit juices. While it is unlikely to pose harm to health when consumed in moderation, excessive calorie intake remains a concern.

The fiber naturally found in fruits remains intact, encapsulating the sugar within the fruit's cells. As a result, our digestive system requires time to break down these cells, allowing fructose to enter the bloodstream gradually.

However, the scenario changes significantly with juices.

With and Without Fiber

Fruit juice has largely had the fiber removed," remarks Emma Alvin, senior clinical consultant at Diabetes UK, highlighting a critical distinction between fruit and its juiced counterpart.

This absence of fiber in juices classifies the fructose they contain as free sugars, akin to those found in honey or added to processed foods.

According to the World Health Organization, adults should limit their intake of added sugars to no more than 30g per day, equivalent to approximately 150ml of fruit juice. The concern arises from the fact that the fructose in juice, lacking fiber, undergoes rapid processing by the body.

Rapid spikes in blood sugar prompt the pancreas to release insulin, striving to restore stable glucose levels. Over time, this mechanism may strain the pancreas, increasing the risk of developing type 2 diabetes.

In a comprehensive analysis conducted in 2013, researchers examined health data from 100,000 individuals spanning 1986 to 2009. Their findings indicated that regular fruit juice consumption correlated with a heightened risk of type 2 diabetes development. The research postulated that liquids, passing swiftly through the stomach into the intestines, trigger faster and more pronounced fluctuations in insulin and glucose levels, despite comparable nutritional content to whole fruit.

Subsequent investigations reinforced this association. A study tracking the dietary habits and diabetes incidence of over 70,000 nurses for 18 years unearthed a connection between fruit juice intake and type 2 diabetes risk. Scientists hypothesized that the absence of certain components in juices, such as fiber present in whole fruit, could contribute to this phenomenon.

While juices derived from fruits and vegetables boast more nutrients and less sugar than pure fruit juices, they still lack the invaluable fiber found in whole fruits.

Diets rich in fiber are believed to mitigate the risk of various conditions including coronary heart disease, strokes, hypertension, and diabetes. Health experts recommend a daily intake of at least 30 grams of dietary fiber for optimal health maintenance.

Total excess

In addition to the established association between fruit juice consumption and the risk of developing type 2 diabetes, numerous studies highlight the detrimental effects of excessive calorie intake from juices.

Analyzing 155 studies, John Sievenpiper, an assistant professor in the department of nutrition at the University of Toronto, sought to discern whether ostensibly healthy foods and beverages impact the risk of diabetes and coronary artery disease akin to obviously harmful sugary carbonated drinks.

Sievenpiper's objective was to distinguish between the consequences of calorie surplus from those of consuming foods containing various free sugars.

His findings underscored that when food contained excessive calories from sugars, including fruit juice, blood sugar and insulin levels experienced rapid changes, which are considered unfavorable.

However, when total caloric intake remained within recommended limits, there were discernible benefits to consuming whole fruits and even fruit juice.

A typical six-ounce serving of 100 percent fruit juice contains:

  • Approximately 15 to 30 grams of sugar

  • 60 to 120 calories

Sievenpiper concludes that the recommended 150ml of fruit juice per day is within acceptable limits.

His research suggests that foods containing fructose may aid in long-term blood sugar level management, provided they do not lead to calorie surplus.

In the latter scenario, elevated blood sugar and insulin levels may ensue, possibly due to fructose's relatively low glycemic index, while high-glycemic index diets are associated with insulin resistance [18].

"Eating unprocessed fruit is always preferable to drinking fruit juice, but supplementing your diet with juices from fruits and vegetables is acceptable. However, using juices as a thirst-quencher and consuming them in large quantities is misguided," Sievenpiper advises [19].

While fruit juices can contribute to diabetes risk in high-calorie diets, their long-term impact on individuals at a normal weight remains less clear.

"There's much we still don't understand, including the influence of elevated blood sugar levels on diabetes risk without concurrent weight gain," remarks Heather Ferris, assistant professor of medicine at the University of Virginia. "The pancreas's capacity to manage excess sugar partially depends on genetics."

However, research indicates that the risk of surpassing daily calorie intake (2000 for women, 2500 for men) rises with juice consumption.

Multiple studies demonstrate that drinking juice does not reduce consumption of other foods.

"It's also easy to consume large quantities of juice, adding excess calories," notes Emma Alvin. "And when calorie intake rises, so does weight gain."

A study tracking over 70,000 nurses found a strong association between fruit juice intake and diabetes risk, reinforcing the importance of consuming whole fruits instead [20].

Potatoes on a Diet Are Healthier Than Rice

When it comes to selecting starchy foods for a balanced diet, potatoes often take a backseat to rice. However, scientific evidence suggests that potatoes can be a healthier option, especially for individuals looking to manage their weight and improve overall health.

Nutritional Comparison:

Potatoes are nutrient-dense tubers that offer a variety of essential vitamins and minerals. A medium-sized potato provides significant amounts of vitamin C, potassium, vitamin B6, and fiber, all of which are vital for optimal health. In comparison, rice, while a good source of carbohydrates, lacks the same breadth of nutrients found in potatoes.

Fiber Content:

One of the key advantages of potatoes over rice is their higher fiber content. Fiber plays a crucial role in digestive health, satiety, and weight management. Potatoes, especially when consumed with the skin, are rich in dietary fiber, which helps promote feelings of fullness and aids in digestion. In contrast, white rice, which is stripped of its outer bran layer during processing, contains minimal fiber and may lead to rapid spikes in blood sugar levels.

Resistant Starch:

Another unique aspect of potatoes is their content of resistant starch, a type of carbohydrate that resists digestion in the small intestine and acts as a prebiotic, nourishing beneficial gut bacteria. Resistant starch has been linked to improved insulin sensitivity, reduced appetite, and enhanced digestive health [21]. While rice contains some resistant starch, the levels are generally lower compared to certain varieties of potatoes, such as boiled and cooled potatoes.

Glycemic Index:

The glycemic index (GI) measures how quickly a carbohydrate-containing food raises blood sugar levels. Foods with a high GI can cause rapid spikes in blood sugar, which may contribute to weight gain and metabolic disorders over time. Potatoes have a lower GI compared to white rice, meaning they have a gentler impact on blood sugar levels and can help promote stable energy levels throughout the day [22].

Incorporating Potatoes into a Healthy Diet:

Contrary to popular belief, potatoes can be part of a healthy diet when prepared in a nutritious manner. Opt for cooking methods like boiling, baking, or steaming, and avoid excessive frying or loading with high-fat toppings.

In conclusion, potatoes offer numerous health benefits and can be a valuable addition to a balanced diet. With their rich nutrient content, high fiber levels, and favorable glycemic profile, potatoes provide a healthier alternative to rice for individuals seeking to improve their dietary habits and support overall well-being. As always, moderation and variety are key principles in achieving a nutritious and sustainable diet.

References

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  14. Schoenfeld, B. J., et al. (2013). "Nutrient timing revisited: is there a post-exercise anabolic window?" Journal of the International Society of Sports Nutrition.

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  16. Slavin, J. L., & Lloyd, B. (2012). "Health Benefits of Fruits and Vegetables." Advances in Nutrition.

  17. Drewnowski, A., & Rehm, C. D. (2015). "Fruit and vegetable consumption and body weight." The American Journal of Clinical Nutrition.

  18. Muraki, I., et al. (2013). "Fruit consumption and risk of type 2 diabetes: results from three prospective longitudinal cohort studies." BMJ.

  19. Sievenpiper, J. L., et al. (2018). "Type 2 diabetes: How do fructose-sweetened drinks affect risk?" The BMJ.

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