Nina Halvorsen

Nina Halvorsen is a working name, not a person with letters after it. The site says so here rather than leaving it to be worked out, because a health reference that is vague about its own authority has already failed at the thing it is asking readers to do.

What sits behind the byline

No clinic, no laboratory, no degree in nutrition. What there is: someone who will read a 1997 paper, a 2014 trial and a supplement label, notice that all three use the word sulforaphane to mean three different quantities, and write down which is which.

The rule that governs most of this site

A sulforaphane number without its assay is not a number. Published figures for the same food differ by more than tenfold depending on whether the measurement captured glucoraphanin, the isothiocyanate itself, or urinary metabolites standing in for both. Any figure quoted here names the method that produced it. Where a source declines to say, the figure is left out, which is the reason some pages here have gaps that competing pages fill confidently.

On mistakes

Errors get corrected on the page, with the date moved, and the old claim described rather than deleted. A reference that silently rewrites itself is not one worth citing.