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5 Herbal Supplements That Could Harm Your Liver
Herbal supplements have surged in popularity as natural alternatives for health and wellness, but not all of them are as safe as they may seem. While marketed as « natural, » many herbal supplements can cause significant harm to the liver—a critical organ responsible for detoxifying the body. The liver processes everything we ingest, and some herbal supplements contain compounds that can lead to liver damage, sometimes even without any immediate symptoms. Here’s a closer look at five herbal supplements that may put your liver at risk.
1. Green Tea Extract – Popular Yet Potent
Green tea extract is commonly used for its antioxidant properties and weight-loss benefits. However, when taken in large doses, it can cause hepatotoxicity (liver toxicity). Studies have linked high doses of concentrated green tea extract to liver damage and even acute liver failure in some cases. While regular consumption of green tea is generally safe, the concentrated form found in supplements can be too potent, especially for people with pre-existing liver conditions.
Risk: Liver damage and acute liver failure at high doses.
What to Do: Always consult a healthcare provider before taking green tea extract, especially in high concentrations.
2. Kava – Ancient Relaxant with a Dark Side
Kava, a root from the Pacific Islands, has long been used for its calming and anti-anxiety properties. Despite its benefits, kava has been linked to severe liver damage, including inflammation and hepatic necrosis. Several countries have restricted or banned kava due to concerns over its potential to cause liver toxicity. If you consume kava for stress relief or sleep, it’s important to consider its risks.
Risk: Liver inflammation, necrosis, and liver failure.
What to Do: Consider alternative stress-relief methods or consult a healthcare professional before using kava, especially if you have liver concerns.
3. Comfrey – Traditional Herb with Toxicity Risks
Comfrey is often used in herbal medicine for its purported healing properties, especially for wounds and inflammation. However, it contains pyrrolizidine alkaloids (PAs), which are highly toxic to the liver. Long-term or frequent use of comfrey, particularly in large doses, can lead to veno-occlusive disease, a condition where the veins in the liver become blocked, causing cirrhosis and potentially liver failure.
Risk: Liver damage, cirrhosis, and failure due to pyrrolizidine alkaloids.
What to Do: Avoid comfrey, particularly in its internal form, as it can cause serious harm even with short-term use.
4. Black Cohosh – Menopause Relief with Potential Harm
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