The Wilson Center, an independent research group based in Washington, DC, has published a public database of consumer products that are identified as containing nanomaterials. The database contains 1,628 consumer products, including 383 that contain silver nanoparticles. Nearly 100 food products are listed in the database, ranging from cheese sticks to cookies and cake frosting to canola oil. The potential health benefits or risks of nanomaterials remain unclear, but many consumer groups object to their undisclosed inclusion in consumer products.