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.

Scientific Claim

Consumption of 14 g/kg body weight of cruciferous vegetables per day for 14 days reduces serum interleukin-6 (IL-6) concentrations by 19% in healthy young adults aged 20–40, indicating a direct causal effect of high-dose cruciferous vegetable intake on lowering this systemic inflammatory biomarker.

Original Statement

“IL-6 concentrations were significantly lower on day 14 of the 2xC and 1xC+A diets than with the basal diet [-19% (95% CI: -30%, -0.1%) and -20% (95% CI: -31%, -0.7%), respectively].”

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 randomized crossover RCT design with control condition and statistical significance allows definitive causal language. The claim is limited to the exact population, dose, duration, and biomarker measured.

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 and similar veggies for two weeks lowered a key inflammation marker in the blood by about 19%—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 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.

96%

Eating a moderate amount of broccoli for two weeks might lower inflammation in some people with a certain gene, but the effect isn't strong enough to be sure yet.

92%

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

92%

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

92%

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.

88%