Related Experiment Video
Updated: Jun 5, 2026
06:04
Source and Route of Pyrrolizidine Alkaloid Contamination in Tea Samples
Published on: September 28, 2022
[Toxic hepatitis triggered by green tea]
Johan Rohde1, Claire Jacobsen, Hans Kromann-Andersen
1Medicinsk Afdeling, Glostrup Hospital, Denmark. johan.rohde@gmail.com
Ugeskrift for Laeger
|January 19, 2011
Summary
This study reports a Danish case of toxic hepatitis from daily green tea consumption. High intake of green tea, rich in epigallocatechin gallate (EGCG), can lead to liver damage.
Area of Science:
- Hepatology
- Toxicology
- Nutritional Science
Background:
- Green tea consumption is widespread due to purported health benefits.
- Hepatotoxic side effects linked to green tea have been documented.
- Epigallocatechin gallate (EGCG) is the primary bioactive compound in green tea.
Observation:
- A case of toxic hepatitis in Denmark is presented.
- The patient consumed 4-6 cups of green tea daily for six months.
- This is the first reported Danish case of green tea-induced hepatotoxicity.
Findings:
- Animal studies indicate EGCG is most toxic when consumed fasting and with repeated administration.
- Accumulation of EGCG in the liver can lead to hepatotoxicity.
- Green tea consumption, particularly at high doses, poses a risk of liver injury.
Implications:
- Clinicians should consider green tea hepatotoxicity in patients with unexplained liver injury.
- Healthcare providers should inquire about green tea intake in patients presenting with hepatitis.
- Cases of suspected green tea-induced liver injury should be reported to food authorities for monitoring and public health awareness.
More Related Videos
Related Concept Videos
01:29Hepatic Encephalopathy
DefinitionHepatic encephalopathy is a reversible neurologic syndrome that results from advanced liver dysfunction or portosystemic shunting. It leads to disturbances in cognition, behavior, and motor function due to the brain’s exposure to gut-derived toxins that the liver fails to detoxify.EtiologyThis condition develops either in the setting of acute fulminant hepatitis or progressively during chronic liver disease, such as cirrhosis and portal hypertension. Portosystemic shunting—including...
01:25Hepatitis
Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...
01:25Bioactivation and Tissue Toxicity
Bioactivation is a metabolic process that transforms less reactive substances into highly reactive metabolites, initiating tissue toxicity. This transformation can lead to various toxic effects, including carcinogenesis and teratogenesis. Reactive metabolites are classified into two main types: electrophiles and free radicals.Electrophiles are electron-deficient species and are produced primarily by the enzyme cytochrome P-450 during the metabolism of compounds containing carbon, nitrogen, or...
01:28Viral Hepatitis I: Introduction
Viral hepatitis is an inflammatory condition of the liver caused by infection with hepatotropic viruses, most commonly hepatitis A, B, C, D, and E. Despite variations in structure and transmission, all viruses mentioned infect hepatocytes and provoke immune responses that can hinder liver function. Additionally, some non-hepatotropic viruses can also lead to hepatic inflammation.Hepatitis A VirusHepatitis A virus (HAV) is transmitted through the fecal–oral route, typically by ingestion of food...
01:24Drug Toxicity: Dose-Dependent Reactions
Drug toxicities can be stratified into pharmacological, pathological, or genotoxic based on their mechanisms. The incidence and severity of these toxicities generally increase with the drug's concentration in the body and exposure time.Pharmacological toxicity is evident when the therapeutic effects of drugs overshoot into adverse reactions in a predictable, dose-dependent manner. Central nervous system (CNS) depression from barbiturates is a classic example, with effects escalating from...
01:26Toxic Reactions: Overview
When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...