How much of the active compounds from broccoli show up in urine doesn't predict changes in most inflammation markers in healthy young people.
Scientific Claim
In healthy young adults aged 20–40, consumption of cruciferous vegetables at 7 g/kg or 14 g/kg body weight per day for 14 days does not significantly alter urinary isothiocyanate excretion in relation to changes in most inflammatory biomarkers, indicating that systemic exposure to isothiocyanates is not a primary driver of inflammation changes across the general population.
Original Statement
“Twenty-four-hour urinary isothiocyanate excretion was not associated with any of the inflammation markers overall;”
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 direct measurement of exposure and outcome allows definitive claims of no overall association. The claim is precise and limited to the studied population and biomarkers.
Evidence from Studies
Supporting (0)
Contradicting (1)
The study found that eating lots of broccoli and similar veggies lowered a key inflammation marker (IL-6) in some people, and that this drop was linked to how much of the veggie compounds they excreted in urine — meaning those compounds do affect inflammation, at least in some people.