Abstract: Computer-implemented methods, systems, and computer program products are disclosed for determining nutrition information of nutrition items for a user of a computer device. The method includes: (a) receiving a photograph of a nutrition item from the user computer device, the photograph being captured by a camera of the user computer device; (b) analyzing the photograph and extracting a set of features from the photograph using a nutrition item feature recognition engine, and determining a nutrition item type of the nutrition item based at least in part on the one or more extracted features; (c) determining a quantity, volume, or mass of the nutrition item in the photograph; (d) determining nutritional content information of the nutrition item based on the nutrition item type and the quantity, volume, or mass of the nutrition item; and (e) transmitting the nutritional content information to the user computer device for displaying to the user.