"'The penetration of silver nanoparticles is dangerous to consumers because they have the ability to relocate in the human body after digestion,' Lin says. 'Therefore, smaller nanoparticles may be more harmful to consumers than larger counterparts.'
When ingested, nanoparticles pass into the blood and lymph system, circulate through the body and reach potentially sensitive sites such as the spleen, brain, liver, and heart.
The growing trend to use other types of nanoparticles has revolutionized the food industry by enhancing flavors, improving supplement delivery, keeping food fresh longer, and brightening the colors of food. However, researchers worry that the use of silver nanoparticles could harm the human body."