Hemp is a word that draws some controversy. It is used to refer to products made from the Cannabis plant, not including the drug marijuana. The fiber, oil, and seeds of the Cannabis plant can be used to make many hemp products including foods and beverages, but also non-food materials, like rope, fabric, and paper.
Hemp products are legal, because most of THC has been removed or because they have been made from plants with low THC content. THC is the compound in marijuana that has psychoactive properties.