I have also never heard that wheatgrass is an iron chelator and Dr Reynolds has never suggested this, as far as I know. Wheatgrass is an Hb inducer and also has many positive properties. Even those who show no increase in Hb from wheatgrass report that they have more energy and that their health is improved by taking wheatgrass. There are some natural iron chelators like IP6 and green tea extract and even milk thistle has some chelating properties, but none of these substances can replace chelating drugs. They are used to supplement chelation.