MCT oil has become a popular supplement in recent years, touted for its ability to boost energy, metabolism, and even aid in weight loss.
However, as with any supplement, concerns have been raised about potential side effects. One such concern is whether MCT oil can cause kidney stones.
In this article, we’ll explore the relationship between MCT oil and kidney stones, examining the latest research and expert opinions to help you make an informed decision about whether MCT oil is right for you.
So, let’s dive in and find out if there’s any truth to the claim that MCT oil causes kidney stones.
Does MCT Oil Cause Kidney Stones?
There has been some debate about whether MCT oil can cause kidney stones. Some people have reported experiencing kidney stones after taking MCT oil, while others have not experienced any adverse effects.
According to a systematic literature review published in 2020, the estimated incidence of kidney stones in patients on ketogenic diets (which often include MCT oil) is 5.9%. The review found that uric acid stones were the most prevalent type of kidney stone in patients on ketogenic diets, followed by calcium-based stones.
However, it’s important to note that this study did not specifically examine the relationship between MCT oil and kidney stones. Instead, it looked at the incidence of kidney stones in patients on ketogenic diets, which may or may not have included MCT oil.
Another study published in the Journal of Urology found that a high fat/low carb diet (which may include MCT oil) can be a precursor to increased testosterone production, which in some men may enlarge the prostate and cause other urinary problems including stones.
It’s also worth noting that anyone with liver disease, renal failure, cirrhosis or any other condition that affects the liver should not take MCT oils. Medium-chain triglyceride oils are processed by the liver directly and may cause the condition to worsen.
What Is MCT Oil?
MCT oil is a health supplement that is made up of medium-length chain triglycerides. Triglycerides are stored as fat or used for energy in the body. MCT oil supplements are a man-made, but highly concentrated source of MCTs derived through a process called fractionation. Most common fats are long-chain, which implies that they take longer to digest. In contrast, MCT triglycerides are easier to process based on their shorter chain lengths and direct route to the liver.
MCT oil supplements are derived from coconut oil, mainly because it is one of the best sources of medium-chain triglycerides. There are four kinds of medium-chain triglycerides, each with their own specific benefits; hexanoic acid (c6), decanoic acid (c10), octanoic acid (c8) and dodecanoic acid (c12). Coconut oil fat is over 50 percent medium-chain triglycerides, thus making it a leading choice for most supplements. However, MCTs are also present in a wide range of other consumable items. For example, some of the most conventional secondary sources of MCTs are in dairy products and palm oil.
Of all forms of medium-chain triglyceride, those most widely used in MCT oil supplements are capric acid (c10) and caprylic acid (c8). The only way to increase the amount of MCT in your diet is to take a supplement or increase your consumption of foods that contain medium-chain triglycerides. MCT oils offer a wide range of merits for your holistic health, including digestive benefits and increased energy levels.
What Are Kidney Stones?
Kidney stones are small, hard deposits that form in the kidneys. They are made up of minerals and salts that stick together and can cause intense pain when they pass through the urinary tract. The symptoms of kidney stones can include severe pain in the back, side, or lower abdomen, as well as nausea and vomiting. Kidney stones can be caused by a variety of factors, including dehydration, certain medications, and a diet high in salt and protein. Treatment for kidney stones can range from pain management to surgical removal, depending on the size and location of the stone. It’s important to speak with a healthcare provider if you experience symptoms of kidney stones or have concerns about your risk factors.
The Link Between MCT Oil And Kidney Stones
While there is no direct link between MCT oil and kidney stones, there is evidence to suggest that a high-fat diet (which may include MCT oil) can increase the risk of kidney stones. This is because a high-fat diet can lead to increased testosterone production, which in some men may enlarge the prostate and cause other urinary problems including stones.
Additionally, a systematic literature review found that the incidence of kidney stones in patients on ketogenic diets (which often include MCT oil) is 5.9%. While this study did not specifically examine the relationship between MCT oil and kidney stones, it suggests that there may be a correlation between the two.
It’s important to note that moderate doses of MCT oil are generally considered safe and may even have benefits for kidney function. According to a registered dietitian, a diet with MCT oil had significantly less kidney stone formation and improved kidney function than other diets.
The Latest Research On MCT Oil And Kidney Stones
The latest research on MCT oil and kidney stones is limited, but there are some potential reasons why MCT oil may contribute to the formation of kidney stones. MCT oil is often included in ketogenic diets, which have been associated with a higher incidence of kidney stones. However, it’s important to note that this correlation does not necessarily prove causation.
One study published in the Journal of Urology found that a high fat/low carb diet (which may include MCT oil) can be a precursor to increased testosterone production, which in some men may enlarge the prostate and cause other urinary problems including stones. This suggests that the hormonal changes associated with a high-fat diet may contribute to the formation of kidney stones.
It’s also worth noting that anyone with liver disease, renal failure, cirrhosis or any other condition that affects the liver should not take MCT oils. Medium-chain triglyceride oils are processed by the liver directly and may cause the condition to worsen.
Expert Opinions On MCT Oil And Kidney Stones
Dr. Will Cole, a leading functional medicine practitioner, recommends getting healthy fats from whole food sources like avocados, olives, and nuts, rather than relying solely on MCT oil. He notes that while MCT oil can be a helpful addition to a healthy diet in moderation, taking high doses of MCT oil over time may cause an increase in liver fat.
Registered Dietitian Jennifer Schlette suggests that a diet with MCT oil may actually improve kidney function and reduce the risk of kidney stone formation compared to other diets. However, it’s important to note that this recommendation is based on limited studies and more research is needed to fully understand the relationship between MCT oil and kidney stones.
Anthony DiMarino, RD, notes that while MCT oil can provide a boost in energy and metabolism, it should not be viewed as a magic solution for weight loss or overall health. He recommends using MCT oil in moderation and incorporating a variety of whole foods into your diet for optimal health.
Other Factors That Contribute To Kidney Stones
There are several other factors that can contribute to the formation of kidney stones, including diet, hydration, and certain medical conditions.
One major factor is sodium intake. Consuming too much sodium, often from salt, causes the kidneys to release more calcium into the urine. High levels of calcium in the urine combine with oxalate and phosphorus to form stones. To reduce the risk of kidney stones, it is recommended to limit sodium intake to below 2,300 milligrams per day.
Another important factor is hydration. Drinking enough fluids throughout the day helps prevent most types of kidney stones. It is recommended that individuals drink 2-3 liters of fluid per day, with those with cystine stones potentially needing even more. Water is the best option, but citrus drinks and other fluids can also help prevent kidney stones.
Animal protein intake can also contribute to kidney stone formation. Eating too much red meat, poultry, eggs, and fish can increase levels of uric acid in the body and decrease levels of citrate in urine, which helps prevent stone formation. Limiting protein intake to a portion no larger than a deck of cards is recommended for those prone to kidney problems.
Certain foods can also promote kidney stone formation due to their high oxalate or phosphate content. These include beets, chocolate, spinach, rhubarb, tea, most nuts, and colas. Those who are prone to kidney stones may need to avoid these foods or consume them in smaller amounts.
Finally, certain medical conditions can increase the risk of kidney stones. These include liver disease, renal failure, cirrhosis, and other conditions that affect the liver or kidneys. It is important for individuals with these conditions to speak with their healthcare provider before taking MCT oil or making any significant dietary changes.
