Eating a mix of broccoli and carrots every day for two weeks slightly increases another inflammation marker in the blood of healthy young people.

Scientific Claim

Consumption of 7 g/kg body weight of cruciferous vegetables plus 4 g/kg body weight of apiaceous vegetables per day for 14 days increases serum interleukin-8 (IL-8) concentrations by 16% in healthy young adults aged 20–40, indicating a pro-inflammatory effect of this specific vegetable combination on this biomarker.

Original Statement

“IL-8 concentrations were higher after the 1xC+A diet (+16%; 95% CI: 4.2%, 35.2%) than after the basal diet.”

From study:Cruciferous vegetables have variable effects on biomarkers of systemic inflammation in a randomized controlled trial in healthy young adults.

Evidence Quality Assessment

Claim Status

appropriately stated

Study Design Support

Design supports claim

Appropriate Language Strength

definitive

Can make definitive causal claims

Assessment Explanation

The RCT design with controlled conditions and statistical significance supports definitive causal language. The claim is limited to the exact intervention and biomarker.

Evidence from Studies

Supporting (1)

Cruciferous vegetables have variable effects on biomarkers of systemic inflammation in a randomized controlled trial in healthy young adults.

Randomized Controlled Trial

Human

The study found that eating a lot of broccoli-like and carrot-like veggies for two weeks made a specific inflammation marker (IL-8) go up by 16% in young healthy people — exactly what the claim says.

Contradicting (0)

No contradicting evidence found

Source Study

Cruciferous vegetables have variable effects on biomarkers of systemic inflammation in a randomized controlled trial in healthy young adults.

Score: 69

DOI: 10.3945/jn.114.197434

Similar Assertions

Eating a lot of broccoli, cabbage, and similar veggies every day for two weeks can lower a key inflammation marker in the blood of healthy young people.

92%

People with a certain gene variation who eat a lot of broccoli for two weeks see lower levels of two inflammation markers in their blood.

91%

Eating a mix of broccoli and carrots every day for two weeks lowers a blood inflammation marker just as much as eating a lot of broccoli alone.

90%

For people with a certain gene combination, eating broccoli for two weeks actually made one inflammation marker go up instead of down.

86%

People with a specific genetic variation who eat a mix of broccoli and carrots for two weeks see big drops in two key inflammation markers in their blood.

85%