About this site

The problem this site exists for

Sulforaphane is not present in intact broccoli, which means almost every number attached to it depends on how the food was prepared and how the measurement was made. Most writing on the subject skips both. This site does not, and that single decision explains most of what follows.

Assay before figure

Any quantity published here names the method that produced it. Glucoraphanin measured by HPLC, isothiocyanate measured after enzymatic conversion, and urinary metabolites standing in for absorbed dose are three different things that all get called sulforaphane content in popular writing. Where a source will not say which it measured, the figure does not appear.

Cells, mice, people

Each page states which of the three a finding came from. The literature here is heavy on the first two and thin on the third, so pages frequently end by saying that no adequate human trial has been run. That gap is reported rather than filled.

Absent by choice

• Products for sale, affiliate links, sponsored placement.
• Dosing instructions. Trial doses are reported; nobody is told what to take.
• Qualifications nobody holds.
• Round numbers with no method behind them.

The byline

Everything here is written under Nina Halvorsen, a working name. That page explains exactly what is and is not behind it.

Errors, and how to report one

Mistakes are fixed on the page with the date moved and the previous claim described, never quietly overwritten. Send one, or ask where a figure came from, at info@sulforaphane.us.com. Personal health questions are not answered.