Stanley W. Jacob reported having administered MSM to over 18000 patients with a variety of ailments; he co-authored a book promoting MSM with a variety of claims including its supposed utility as a natural source of “biologically active sulfur” suggesting that people are deficient in such forms of sulfur in their dietary intake. There is no Dietary Reference Intake (DRI) or Daily Value established for sulphur; it is readily available in onions garlic and cruciferous vegetables and in protein-containing foods including nuts seeds milk and eggs.
