The Claim

Patients diagnosed with cirrhosis produce approximately 12.3 micrograms of endogenous melatonin per day, a significant reduction from the 28.8 micrograms produced by healthy individuals, indicating that impaired liver function directly reduces the body's melatonin synthesis and regulation.

Source: Pharmacokinetics of melatonin in man: first pass hepatic metabolism.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
27score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

People with severe liver disease make about half as much of the sleep hormone melatonin as healthy people do. This happens because a damaged liver struggles to help the body make or control this important chemical.

See the scientific wording

Patients diagnosed with cirrhosis produce approximately 12.3 micrograms of endogenous melatonin per day, representing a substantial reduction compared to the 28.8 micrograms produced by healthy individuals. This decreased production rate suggests that impaired liver function directly impacts the body's ability to synthesize or regulate melatonin. This finding is from the abstract summary - full study details were not available.

What the research says

1 study
  1. Study: Pharmacokinetics of melatonin in man: first pass hepatic metabolism.

    The study confirms that people with liver cirrhosis produce much less melatonin (about 12.3 micrograms a day) compared to healthy people (28.8 micrograms a day), showing that liver problems directly lower the body's natural melatonin levels.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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