In this article we present a study of assessments of nanotechnology in food and agriculture. The study was conducted as a part of a project studying the need for integrated assessment of emerging science and technologies. The article first introduces central hopes and concerns regarding nanotechnology in food and agriculture, and how these are assessed in different assessment spheres. The question of whether there is a need for more integration in assessments in this field is then introduced and the multiple interpretations of this notion are discussed, first in a sustainability context and then in the specific context of emerging science and technologies. This serves as the basis for analysing the current status of integration of nano-food assessments. The validity of our findings is discussed and the article ends with a summary of the main conclusions from the discussion.