1. A device for monitoring food consumption comprising: an eyewear frame with a posterior portion which is configured to start at a left ear, loop over the top of a person's head, and then end at the right ear; a plurality of EEG sensors on the posterior portion of the eyewear frame, wherein the locations of at least two of the plurality of EEG sensors on the posterior portion of the eyewear frame are identified according to the International 10-20 System and/or the Modified Combinatorial Nomenclature (MCN), and wherein the locations of the at least two of the plurality of EEG sensors on the posterior portion of the eyewear frame are selected from the group consisting of: C3, C4, Cz, CP3, CP4, CPz, P3, P4, and Pz; a camera which is automatically activated to take pictures when a person consumes food based on analysis of data from the plurality of EEG sensors; a power source; and a data processor which is specifically programmed to: analyze data from the plurality of EEG sensors to detect when the person consumes food; and analyze images from the camera to identify the types and quantities of food which the person consumes to estimate the person's caloric intake.