Madeleine Hull
Diet pills are a type of dietary supplement, which, alongside medications, can cause liver damage. This occurs in a process called drug-induced liver injury (DILI). While the Food and Drug Administration (FDA) regulates supplements as food, it does not review them for safety, quality, and effectiveness as it does with drugs. A 2022 study found that liver failure tied to herbal and dietary supplements had increased eightfold from 1995 to 2020.
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What You'll Learn
Dietary supplements and liver damage
Dietary supplements are used to improve or maintain overall health and help meet daily requirements of essential nutrients. However, they can also cause liver damage. According to a 2022 study published in the journal Liver Transplantation, drug-induced acute liver failure tied to herbal and dietary supplements increased eightfold from 1995 to 2020. This is concerning, as a large number of Americans consume dietary supplements regularly. The 2017-2018 National Health and Nutrition Examination Survey found that about 58% of US adults aged 20 and older reported consuming a dietary supplement in the past 30 days. This number increased to 75% in a 2024 poll by the Council for Responsible Nutrition (CRN).
The liver is responsible for breaking down substances taken by mouth, including medications and dietary supplements. While the Food and Drug Administration (FDA) does regulate supplements, they are treated as food rather than drugs, and the agency does not review them for safety, quality, and effectiveness as closely as they do with drug approvals. As a result, it is up to manufacturers to properly label their products, and the FDA will review them after they hit the market. This has led to issues with mislabelling, as a previous study by Dr. Robert Fontana found a 50% mismatch between stated ingredients on the label and what they actually contained.
Some common medications that can cause liver damage include acetaminophen (Tylenol), which is widely available without a prescription and is present in many cold and flu remedies, as well as prescribed pain medications. Amoxicillin/clavulanate, a common antibiotic for respiratory, ear, and skin infections, is also known to cause liver injury, although it is not a very common side effect. It is important to note that even vitamins and dietary supplements such as weight-loss products, muscle builders, and too much iron or vitamin A can be harmful to the liver.
Liver damage caused by dietary supplements can be challenging to diagnose and treat, as the component responsible for the toxicity is often unknown. This has led to a growing concern about HDS-related hepatotoxicity, particularly as the use of these products appears to be increasing. To prevent liver damage, it is important to understand a drug's effects before taking it and to speak with a doctor before starting any new medications or supplements.
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Medication-induced liver damage
Acetaminophen is widely available without a prescription and is commonly found in cold and flu remedies, as well as in prescribed pain medications. While it is generally safe when used as directed, taking too much acetaminophen at once or continuously over several days can cause liver damage, especially when combined with alcohol consumption.
Herbal and dietary supplements have also been linked to an increasing number of cases of liver damage and liver failure. A 2022 study found that liver failure tied to these supplements increased eightfold from 1995 to 2020. It is important to note that the Food and Drug Administration (FDA) does not review supplements for safety, quality, and effectiveness as they do with drug approvals, which can lead to mislabelling and unsafe ingredients.
Additionally, certain antibiotics and nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen have been associated with liver damage. People with pre-existing liver disease may be at a higher risk of liver injury when taking certain medications, and it is always recommended to consult a healthcare professional before starting any new medication or supplement.
To monitor liver health, physicians often use a liver panel test to establish a baseline before starting a medication. Minor elevations in liver tests may occur after starting a new medication and do not always indicate significant liver damage. However, it is important to be aware of the potential risks and symptoms of liver damage to seek appropriate medical attention if needed.
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Risk factors for liver damage
The liver is a vital organ that performs many functions, including breaking down substances we ingest, such as medications and dietary supplements. While the liver is resilient, certain risk factors can increase the likelihood of liver damage. Here are some key risk factors to be aware of:
Medications
Certain medications have been associated with an increased risk of liver damage. Acetaminophen, also known as Tylenol, can cause liver damage if taken in high doses or continuously over several days. It is important to read the labels of all medications and be aware of their potential effects on the liver. Other medications that may increase the risk of liver damage include antibiotics, nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen, and cholesterol-lowering medications.
Herbal and Dietary Supplements
Herbal and dietary supplements have been increasingly linked to liver damage. A 2022 study found that liver failure associated with these supplements had increased significantly from 1995 to 2020. Examples of supplements that may cause liver injury include green tea extract, ginseng, and weight-loss products. It is important to consult with a healthcare professional before taking any supplements to ensure they are safe and do not interact negatively with any medications.
Alcohol Consumption
Alcohol consumption can increase the risk of liver damage, especially when combined with certain medications. People who regularly consume alcoholic beverages and take medications such as Tylenol are at a higher risk of developing severe liver damage.
Pre-existing Liver Disease
Individuals with pre-existing liver disease, such as hepatitis C or fatty liver, may be more susceptible to liver injury from medications. While mild liver disease does not necessarily increase the risk of toxicity, any liver damage that occurs can be more severe and challenging to manage.
Individual Risk Factors
Intrinsic and idiosyncratic factors play a role in liver damage. Intrinsic factors depend on the dosage and environmental and genetic risk factors, making it easier to predict and avoid. Idiosyncratic factors, on the other hand, depend more on individual risk factors and have a longer latency period, making them harder to predict and control.
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Liver damage symptoms
Liver disease is a chronic condition that causes progressive damage to the liver over time. It is often caused by viral infections, toxic poisoning, and certain metabolic conditions. The liver is highly resilient and can regenerate itself to an extent, but constant recovery takes its toll, eventually leading to irreversible damage.
Liver disease typically progresses through four stages: inflammation, fibrosis, cirrhosis, and liver failure. In the initial stages, the liver responds to injury or toxicity by triggering inflammation, which is an attempt to heal. However, prolonged inflammation results in fibrosis, a gradual stiffening of the liver due to scar tissue buildup. This reduces blood flow and nutrient access, impairing the liver's function.
The advanced stage of fibrosis is called cirrhosis, where scarring becomes severe and permanent. At this stage, the liver can no longer regenerate, and its function begins to deteriorate. Liver failure occurs when the liver can no longer adequately perform its essential tasks, marking the final stage of liver disease.
It is important to note that liver disease often exhibits no symptoms in its early stages, and late-stage liver disease is more challenging to treat. However, some common symptoms associated with late-stage liver disease include jaundice, a yellowing of the eyes and skin, and a range of other symptoms unique to each individual.
While diet pills were not mentioned explicitly in the context of liver damage, it is important to note that certain medications and supplements can harm the liver. Acetaminophen, for example, is safe when used as directed, but excessive doses or continuous high doses over several days can lead to liver damage, especially when combined with regular alcohol consumption. Additionally, some supplements, such as weight-loss products, can also be harmful to the liver. Therefore, it is crucial to consult a healthcare professional before taking any medication or supplement to understand the potential risks and ensure liver health.
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Preventing liver damage
Although medications are extensively tested for safety before being approved by the Food and Drug Administration (FDA), some can still cause liver damage, a process known as drug-induced liver injury (DILI). This can occur due to intrinsic or idiosyncratic DILI. Intrinsic DILI depends on the dosage, making it easier to predict and avoid. Idiosyncratic DILI, on the other hand, is harder to control as it depends more on individual risk factors than drug-related factors and has a longer latency period.
To prevent liver damage, it is crucial to understand a drug's effects before taking it. Being aware of potential side effects can help individuals identify any issues and link them back to the medication. Consulting a doctor before taking any new medications or supplements is essential, especially for those with pre-existing liver conditions.
Additionally, certain substances are known to increase the risk of liver damage. For example, acetaminophen (commonly known as Tylenol) can cause liver damage if taken in high doses or continuously over several days. People who consume alcohol regularly are at a higher risk of developing severe liver damage from acetaminophen. Therefore, it is important to read the labels of all medications and be cautious of the total amount of acetaminophen consumed from multiple sources, as it can be present in many over-the-counter cold and flu products.
Dietary and herbal supplements have also been linked to an increasing number of cases of liver injury. A 2022 study found that drug-induced acute liver failure associated with these supplements increased eightfold from 1995 to 2020. While supplements can provide essential nutrients, they may also contain hidden ingredients and interact negatively with certain medications. Therefore, it is important to consult a healthcare professional before taking any supplements to ensure they are appropriate and safe for your individual situation.
Furthermore, maintaining a healthy diet is crucial in preventing liver damage. Foods high in fat, sugar, and salt can put extra stress on the liver. Thus, adopting a balanced and nutritious diet can support liver health and reduce the risk of liver damage.
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Frequently asked questions
Diet pills are dietary supplements taken for weight loss.
Diet pills are known to cause liver damage. A 2022 study in the journal Liver Transplantation found that liver failure tied to herbal and dietary supplements had increased eightfold from 1995 to 2020.
Liver damage does not always come with symptoms. However, if you develop symptoms of liver inflammation that last more than a day, you should consult your healthcare provider immediately.
It is important to consult your healthcare provider before taking any new medications or supplements. Your doctor can help determine which supplements are safe for you based on your health goals and current medications.
