Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:Other potentially carcinogenic effects of insulin resistance stem from abnormal levels of glucose and fatty acids, which include: altered intracellular signaling, chronic inflammation resulting from production of reactive oxygen species, and enhanced proliferation of transformed colonocytes due to increased energy supply [1].
Category: