The ketogenic diet is a popular weight-loss strategy that involves eating a high-fat, low-carb diet. While it can be effective for quick weight loss, it also has several potential health risks, including kidney stones.
Kidney stones are a well-known side effect of the keto diet, especially in children who follow the diet as a treatment for epilepsy. In one study, 13 out of 195 children following a keto diet developed kidney stones, and another study found that the overall incidence of kidney stones in people on the keto diet was 5.9%.
The keto diet may cause kidney stones because it tends to be high in animal protein and low in fruits and vegetables. This can make the blood and urine more acidic, leading to increased excretion of calcium in the urine and a higher risk of kidney stones. Additionally, the keto diet may reduce the amount of citrate in the urine, a substance that helps prevent the formation of kidney stones.
People with chronic kidney disease should avoid the keto diet, as it may worsen their condition. The keto diet may also cause other health issues, including digestive problems, nutrient deficiencies, low blood sugar, and impaired bone health. Therefore, it's important to speak to a healthcare professional before starting the keto diet, especially if you have any medical conditions.
Characteristics | Values |
---|---|
Incidence of kidney stones | 5.9% in patients on ketogenic diets at a mean follow-up time of 3.7 +/− 2.9 years |
Incidence of kidney stones in children | 5.8% |
Incidence of kidney stones in adults | 7.9% |
Type of kidney stones | 48.7% uric stones, 36.5% calcium-based stones, 27.8% mixed uric acid and calcium-based stones |
Cause of kidney stones | High intake of animal foods can cause blood and urine to become more acidic, leading to increased excretion of calcium in urine |
Cause of kidney stones | Keto diet reduces the amount of citrate that’s released in urine |
Cause of kidney stones | Excess protein can also increase urine calcium |
Cause of kidney stones | Not enough calcium on keto diets |
Cause of kidney stones | Possible changes to gut bacteria |
Cause of kidney stones | Excessive sodium intake |
What You'll Learn
- The keto diet can lead to kidney stones due to the increased acid levels in the blood and urine
- The keto diet can cause constipation and negatively impact gut health
- The keto diet may lead to dangerously low blood sugar levels, especially for those with type 1 diabetes
- The keto diet may increase the risk of gout, especially in the early stages
- The keto diet may not be suitable for those with chronic kidney disease due to the potential for acid buildup in the blood
The keto diet can lead to kidney stones due to the increased acid levels in the blood and urine
The ketogenic diet is a low-carb, high-fat, and moderate-protein diet that can lead to a metabolic state called ketosis. While it is popular for weight loss, it can also increase the risk of kidney stones.
The keto diet's restriction of carbohydrate-rich foods like fruits and vegetables can lead to a lack of alkali and citrate, which help neutralise acids produced by protein metabolism and prevent kidney stones. This, combined with the diet's typically high protein content, can result in increased acid levels in the blood and urine, leading to higher urine calcium levels and a greater risk of kidney stones.
Additionally, the keto diet may cause digestive issues and changes in gut bacteria due to its low fibre content. It may also lead to nutrient deficiencies, particularly of calcium, vitamin D, magnesium, and phosphorus.
Furthermore, the keto diet is not suitable for everyone. People with chronic kidney disease should avoid it as it can worsen their condition by causing acidosis. Individuals with type 1 diabetes may also experience dangerously low blood sugar levels.
To summarise, the keto diet can lead to kidney stones due to increased acid levels in the blood and urine, as well as potential nutrient deficiencies and digestive issues. It is important to consult a healthcare professional before starting this diet, especially if you have any medical conditions.
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The keto diet can cause constipation and negatively impact gut health
The keto diet is a high-fat, low-carb approach to eating that has become popular in recent years. While it may be effective for quick weight loss, it is extremely regimented and can be difficult to stick to. The diet typically restricts carbohydrates to less than 50 grams per day and calls for a moderate increase in protein and fat intake. This means that 70 to 80 percent of your calories come from fat, about 20 percent from protein, and only 5 percent from carbs.
One of the potential dangers of the keto diet is that it can lead to constipation and other digestive issues. This is because high-carb foods that are rich in fiber, such as fruits, whole grains, and beans, are eliminated on the keto diet. Fiber is essential for regular bowel movements and a healthy gut microbiome. The gut microbiome has been linked to immune function and mental health. By restricting these foods, the keto diet can lead to constipation and other gastrointestinal discomforts.
In addition, the keto diet can cause an imbalance in the gut bacteria. Fiber feeds the beneficial bacteria in the gut, and a diet low in fiber can negatively affect the composition of the gut microbiome. This can have far-reaching consequences, as the gut bacteria have been linked to inflammation, mental health, and overall immunity.
To help mitigate the risk of constipation and gut health issues on the keto diet, it is important to include plenty of high-fiber, low-carb foods. Some examples include chia seeds, almonds, coconut, avocado, broccoli, cauliflower, and asparagus. It is also crucial to stay hydrated and drink plenty of water, as dehydration can exacerbate constipation.
Furthermore, it is worth noting that the keto diet may not be suitable for everyone. Individuals with kidney disease, for example, should avoid the keto diet, as it can put stress on the kidneys and increase the risk of kidney stones. Those with diabetes should also proceed with caution, as the keto diet can lead to dangerously low blood sugar levels. It is always recommended to consult with a healthcare professional before starting any new diet, especially one as restrictive as keto.
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The keto diet may lead to dangerously low blood sugar levels, especially for those with type 1 diabetes
The ketogenic diet is a very-low-carb, high-fat diet that has been shown to offer several health benefits. However, it can be dangerous for people with type 1 diabetes as it may lead to dangerously low blood sugar levels.
The keto diet is a popular weight-loss method that involves hyper-restricting foods that contain carbohydrates and increasing fat intake. Carbohydrates help control blood sugar levels, which are of particular importance for people with diabetes. By cutting carbs out almost entirely, the keto diet has been shown to lower blood sugar levels. While this can be beneficial for people with type 2 diabetes, it can be dangerous for those with type 1 diabetes.
Type 1 diabetes is a chronic condition in which the pancreas produces little to no insulin. Insulin is a hormone that helps regulate blood sugar levels. Without enough insulin, blood sugar levels can become too high, leading to a condition called hyperglycemia. On the other hand, if blood sugar levels drop too low, a condition called hypoglycemia can occur. This can be dangerous and lead to serious complications, such as confusion, dizziness, slurred speech, and loss of consciousness.
The keto diet raises the risk of hypoglycemia, especially for people with type 1 diabetes who are also taking insulin. A study in 11 adults with type 1 diabetes found that the keto diet significantly improved long-term blood sugar control, but some participants experienced episodes of low blood sugar. This is likely due to improper insulin dosing. When following the keto diet, it is crucial for people with type 1 diabetes to work with a healthcare professional to adjust their insulin regimen accordingly and monitor their blood sugar levels frequently to prevent hypoglycemia.
In summary, while the keto diet can be effective for weight loss and blood sugar management in some people with type 2 diabetes, it may lead to dangerously low blood sugar levels in people with type 1 diabetes. Close medical supervision and careful insulin adjustments are necessary to mitigate the risk of hypoglycemia in this population.
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The keto diet may increase the risk of gout, especially in the early stages
The keto diet's restriction of carbohydrate-rich foods like whole grains, fruits, and starchy vegetables can lead to a reduction in alkali levels in the body. Alkali helps neutralise the acid produced during protein metabolism, and its absence can result in higher levels of acid in the urine, creating an environment conducive to gout and kidney stone formation.
Additionally, the keto diet's emphasis on animal-based proteins and fats can further increase the risk of gout. Animal proteins, particularly those from organ meats, contain high levels of purines, which are broken down into uric acid by the body. This increase in uric acid, combined with the acid environment promoted by the keto diet, can exacerbate gout symptoms.
Furthermore, the keto diet's tendency to cause dehydration and electrolyte imbalances, especially in the early stages, can also contribute to gout risk. Dehydration leads to reduced urine production, causing uric acid to become more concentrated in the kidneys and joints, triggering gout attacks.
While the keto diet has been associated with gout, it is important to note that recent studies have suggested a protective effect. A 2017 study by Yale researchers found that the keto diet may help target the inflammation source and prevent acute gout symptoms. This protective effect is attributed to the presence of BOHB, a primary ketone that reduces inflammation without compromising the body's defences against infection.
To mitigate the risk of gout while on the keto diet, staying hydrated is crucial. Drinking plenty of water helps dilute uric acid levels and prevents dehydration, reducing the likelihood of gout attacks. Additionally, including more alkaline foods, such as green vegetables, can help balance the body's pH and reduce acidity.
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The keto diet may not be suitable for those with chronic kidney disease due to the potential for acid buildup in the blood
The ketogenic diet is a low-carb, high-fat, and moderate-protein diet that can lead to ketosis, a metabolic state in which the body uses fat for energy instead of carbohydrates. While the keto diet is popular for weight loss, it may not be suitable for those with chronic kidney disease (CKD) due to the potential for acid buildup in the blood.
The keto diet's high-fat, animal food content, such as eggs, meat, and cheese, can cause the blood and urine to become more acidic. This increased acidity can lead to a higher excretion of calcium in the urine, which is a risk factor for kidney stone formation. Additionally, the keto diet may reduce the amount of citrate in the urine, a compound that can bind to calcium and prevent kidney stone formation.
For individuals with CKD, the keto diet may be dangerous as their weakened kidneys may struggle to remove this acid buildup, leading to a state of acidosis. Acidosis can further damage kidney function and worsen CKD. Furthermore, low-protein diets are often recommended for individuals with CKD, while the keto diet is moderate to high in protein.
The potential for acid buildup in the blood and the resulting increase in calcium excretion and decrease in citrate make the keto diet unsuitable for those with CKD. The diet's high protein content and acid-forming effects can exacerbate existing kidney problems and increase the risk of kidney stone formation. Therefore, it is essential for individuals with CKD to consult their healthcare provider and dietitian before considering the keto diet.
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Frequently asked questions
Kidney stones are small, hard deposits of mineral and acid salts that form inside your kidneys. They can be extremely painful and may cause problems if they aren't treated.
The keto diet is a high-fat, low-carb approach to eating that has become popular in recent years. It can be effective for weight loss, but it also has some potential health risks, including kidney stones. This is because the keto diet can cause your blood and urine to become more acidic, leading to increased excretion of calcium in your urine.
Symptoms of kidney stones can include severe pain in your side and back, below the ribs, pain that spreads to the lower abdomen and groin, nausea and vomiting, blood in your urine, and a persistent need to urinate.
Research suggests that the incidence of kidney stones in people on the keto diet is around 5.9%. This is much higher than in the general population, where the incidence is around 0.3% per year for men and 0.25% per year for women.
To reduce your risk of kidney stones while on the keto diet, it is recommended to drink plenty of water, eat as many vegetables as possible, and limit your sodium intake. You may also want to consider taking a potassium citrate supplement, as this has been shown to reduce the risk of kidney stones.