The Claim

Daily ingestion of 61-64 mg of cafestol for 28 days in healthy adult males increases total serum cholesterol by 0.79 mmol/L (31 mg/dL), LDL cholesterol by 0.57 mmol/L (22 mg/dL), fasting triacylglycerols by 0.65 mmol/L (58 mg/dL), and alanine aminotransferase by 18 U/L, indicating a direct causal effect on lipid metabolism and liver enzyme levels.

Source: Separate effects of the coffee diterpenes cafestol and kahweol on serum lipids and liver aminotransferases.

What the research says

Supports is higher

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

Supports
66score
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

Consuming 61-64 milligrams of cafestol daily for 28 days raises total serum cholesterol by 0.79 mmol/L, LDL cholesterol by 0.57 mmol/L, fasting triacylglycerols by 0.65 mmol/L, and alanine aminotransferase by 18 U/L in healthy adult males.

See the scientific wording

Daily ingestion of 61-64 mg of cafestol for 28 days in healthy adult males increases total serum cholesterol by 0.79 mmol/L (31 mg/dL), LDL cholesterol by 0.57 mmol/L (22 mg/dL), fasting triacylglycerols by 0.65 mmol/L (58 mg/dL), and alanine aminotransferase by 18 U/L, indicating a direct causal effect on lipid metabolism and liver enzyme levels.

Why this might work

Cafestol blocks the liver from removing cholesterol from the blood and stops it from turning cholesterol into bile acids, so cholesterol and fats build up in the blood and the liver gets stressed.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Separate effects of the coffee diterpenes cafestol and kahweol on serum lipids and liver aminotransferases.

    This study gave healthy men 61–64 mg of cafestol every day for four weeks and found their blood cholesterol, triglycerides, and liver enzyme levels went up—exactly what the claim says. So yes, cafestol really does affect these body markers.

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

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.