The large majority of biopharmaceutical products are pharmaceuticals that are derived from life forms. Small molecule drugs are not typically regarded as biopharmaceutical in nature by the industry. However members of the press and the business and financial community often extend the definition to include pharmaceuticals not created through biotechnology. That is, the term has become an oft-used buzzword for a variety of different companies producing new, apparently high-tech pharmaceutical products. The first such substance approved for therapeutic use was biosynthetic 'human' insulin made via recombinant DNA technology. Sometimes referred to as Biopharming, is a sub-sector of the biotechnology industry that involves the process of genetically engineering plants so that they can produce certain types of therapeutically important proteins and associate molecules such as peptides and secondary metabolites. The proteins and molecules can then be harvested and used to produce pharmaceuticals. Biopharm proponents claim that using plants can offer an easily controllable, safe, and cost-effective method for manufacturing proteins, provided that proper regulatory safeguards are put into place to ensure that no outcrossing can occur. It is also important to note, that the global demand for particular pharmaceutical protein can easily be met from just a few acres of pharma-crop, which can be grown under high containment conditions (e.g. in the greenhouse). Some scientists even think that the term "gardening" is more appropriate than farming. Opponents are concerned that there are too many ways in which contamination of the food supply involved with using staple.