The keto diet is a very low-carb, high-fat diet that aims to put your body into a metabolic state called ketosis, where it burns fat for fuel. While the keto diet has gained popularity as a weight-loss solution, there are concerns about its effectiveness and potential health risks. Some people turn to keto supplements, such as keto pills and powders, which claim to enhance the benefits of the keto diet and make it easier to achieve ketosis. However, there are questions about the safety and efficacy of these supplements, as well as their high cost. So, do keto supplements really work, or are they just a waste of money?
Characteristics | Values |
---|---|
What is it? | A supplement to support a keto diet |
What does it do? | Puts your body into ketosis without having to follow a ketogenic diet |
How does it work? | Contains beta-hydroxybutyrate ketone, which replaces glucose as fuel and provides your brain, heart and muscles with energy |
What are the benefits? | Weight loss, increased energy, improved mental clarity, better sleep, reduced appetite |
What are the drawbacks? | Side effects include nausea, diarrhoea, stomach discomfort, poor aftertaste, dehydration, flu-like symptoms, dizziness, irritability, muscle soreness, loss of electrolytes, increased sugar cravings, brain fog, difficulty concentrating, constipation, irregular menstrual cycles, decreased bone density, sleep issues |
Is it safe? | Exogenous ketone supplements are generally considered safe and effective, but the long-term effects are unknown |
How much does it cost? | Upwards of $3 per serving |
What You'll Learn
Ketone supplements may decrease appetite
Ketone supplements have been shown to decrease appetite, which may help with weight loss. In a study of 15 people of normal weight, participants who drank a beverage containing ketone esters experienced 50% less hunger after an overnight fast than those drinking a sugary beverage. This effect was attributed to lower levels of the hunger hormone ghrelin between two and four hours after drinking the ketone ester drink. However, ketone supplements may not affect appetite as much in people who have eaten a meal beforehand.
The appetite-suppressing effect of ketone supplements may be due to the increase in blood ketone levels. Ketones are produced when the body breaks down fat for energy, which occurs during fasting or a low-carb diet. This shift in metabolism puts the body in a state of ketosis, which is characterised by raised blood ketones and weight loss. Ketone supplements can mimic this state of ketosis and raise blood ketone levels without having to follow a ketogenic diet.
However, it is important to note that the effects of ketone supplements on appetite may be short-lived, lasting only a few hours. Additionally, while ketone supplements may decrease appetite, their potential weight loss benefits are unknown. Some evidence even suggests that they may hinder weight loss. Furthermore, ketone supplements are costly and can cause side effects such as nausea, diarrhoea, and stomach discomfort.
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Ketone supplements may not be recommended for weight loss
The ketogenic or keto diet is a very low-carb, high-fat diet. After several days on the diet, the body enters a state of ketosis, which is characterised by raised blood ketone levels and weight loss. However, the keto diet can be difficult to follow consistently.
Ketone supplements are claimed to put your body into ketosis without having to follow a ketogenic diet. They are available in two forms: ketone salts and ketone esters. Ketone salts are the most common and are available in powder, pill, or drink form. Ketone esters are used primarily in research and are less readily available for purchase. Both forms of ketone supplements have been shown to increase blood ketone levels, mimicking what happens in ketosis when you follow a ketogenic diet.
However, despite the potential appetite-curbing effects of ketone supplements, their potential weight loss benefits are unknown. Therefore, ketone supplements cannot be recommended for weight loss at this time. In fact, some evidence suggests that they may even hinder it.
Firstly, ketone supplements may prevent body fat from being used as fuel. The purpose of the ketogenic diet for weight loss is to produce ketones from stored fat as an alternative fuel source. But if your ketone blood levels become too high, your blood can become dangerously acidic. To prevent this, healthy people have a feedback mechanism that slows down the production of ketones. As a result, taking ketone supplements may prevent body fat from being used as fuel, at least in the short term.
Secondly, ketone supplements contain calories. They contain about four calories per gram, the same number of calories as carbs or protein. A single serving of exogenous ketone salts typically contains less than 100 calories, but to maintain a state of ketosis, you’ll need several servings each day. That’s because the effect of ketone supplements lasts only a few hours and thus requires repeated doses throughout the day to maintain a state of ketosis.
Thirdly, ketone supplements are not subject to the same strict processes as pharmaceutical drugs to prove their effectiveness, purity, or marketing claims before entering the market. The Food and Drug Administration (FDA) does not regulate the exogenous ketone supplement market. Therefore, neither they nor other regulatory agencies test or evaluate ketone supplements for safety, purity, or effectiveness.
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The keto diet can lead to yo-yo dieting
The keto diet is a very low-carbohydrate, high-fat, and high-protein diet. The goal is to put the body into a state of "ketosis", where it burns fat reserves for energy and, thus, loses weight. Carbohydrates are the body's preferred energy source, so when they are unavailable, the liver produces ketone bodies for energy.
The keto diet can also be challenging to follow consistently due to the unpleasant side effects that may accompany the transition from a standard, higher-carb diet. These symptoms, often referred to as the "keto flu", can include constipation, headache, bad breath, muscle cramps, and diarrhea.
Additionally, the keto diet is not a balanced diet and can result in long-term micronutrient deficiencies. It is extremely low in certain fruits, vegetables, grains, and legumes that are generally considered healthy. By excluding these foods, people on the keto diet may miss out on important fiber, vitamins, minerals, and phytochemicals.
Furthermore, there are limited long-term studies on the keto diet, possibly due to the difficulty of following the diet consistently. This lack of research makes it challenging to fully understand the potential adverse effects and health consequences of this diet.
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The keto diet may cause nutritional concerns
The keto diet is a very low-carb, high-fat diet. It typically restricts carb intake to fewer than 50 grams per day, and followers must eat fat at every meal. The diet aims to force the body to use ketone bodies, a type of fuel that the liver produces from stored fat, instead of sugar (glucose) from carbohydrates.
However, the keto diet restricts several nutrient-dense foods, including fruits, whole grains, and legumes. As a result, the diet may not provide adequate amounts of certain vitamins and minerals. Some studies suggest that the keto diet does not provide enough calcium, vitamin D, magnesium, phosphorus, selenium, vitamin B, and vitamin C. Over time, this could lead to nutrient deficiencies.
The keto diet is also low in fibrous foods like grains and legumes, which can lead to constipation. In addition, the brain typically functions best when using sugar from healthy carbohydrates as an energy source. Low-carb diets like the keto diet may cause confusion and irritability.
Furthermore, the keto diet is high in saturated fat, which has been linked to an increased risk of heart disease. The diet has been associated with higher levels of "bad" LDL cholesterol, which is also linked to heart disease.
Due to these nutritional concerns, individuals should consult a doctor and a registered dietitian before starting the keto diet.
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The keto diet may have side effects
The keto diet is a very low-carb, high-fat diet that can put your body into a state of ketosis, where it burns fat for energy instead of glucose. While this can lead to weight loss, increased energy, and the treatment of chronic illnesses, there are some potential side effects that you should be aware of.
One of the most well-known side effects of the keto diet is the "keto flu." This is a result of the body adapting to a low-carb state and can include symptoms such as headache, weakness, irritability, constipation, nausea, and vomiting. Most people who experience the keto flu feel better within a few weeks, but it's important to stay hydrated and eat foods rich in electrolytes during this time.
Another potential side effect of the keto diet is digestive issues. The keto diet restricts carbs, which can make it difficult to get enough fiber. This may lead to constipation and negative effects on gut health. In addition, the keto diet may also cause changes in gut bacteria, as fiber feeds the beneficial bacteria in the gut.
The keto diet may also lead to nutrient deficiencies, as it restricts several nutrient-dense foods such as fruits, whole grains, and legumes. Some studies suggest that the keto diet may not provide enough calcium, vitamin D, magnesium, and phosphorus. Over time, this could lead to nutrient deficiencies.
Additionally, the keto diet has been linked to impaired bone health. Several studies in animals have shown that the keto diet can decrease bone strength and bone mineral density. This could lead to an increased risk of bone fractures.
The keto diet may also have an impact on heart health. High-fat, low-carb diets that focus on animal foods have been linked to poor heart health outcomes, including increased rates of death from heart disease. However, vegetable-based low-carb diets have been associated with a lower risk of death from heart disease.
Furthermore, the keto diet can also lead to kidney stress. The high intake of animal foods on the keto diet can cause your blood and urine to become more acidic, leading to an increased risk of kidney stones and acute kidney injury.
While the keto diet has been linked to several potential side effects, more research is needed to fully understand the long-term impacts of this diet. It's important to speak to a healthcare professional before starting any new diet, especially if you have any medical conditions.
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Frequently asked questions
The keto diet is a very low-carb, high-fat diet. The diet puts your body into a metabolic state called ketosis, where your body burns fat for fuel.
Keto flu is a result of the body adapting to a low-carb state. It can cause symptoms such as headache, weakness, irritability, constipation, nausea, and vomiting.
Some of the side effects of the keto diet include kidney and heart damage, yo-yo dieting patterns, bad breath, fatigue, constipation, irregular menstrual cycles, decreased bone density, and sleep issues.
There is limited research on the effectiveness of keto supplements. While they may help to decrease appetite and curb hunger, they may also have undesirable consequences for your health and can be expensive.