System for monitoring and managing body weight and other physiological conditions including iterative and personalized planning, intervention and reporting capability

A system to provide feedback for an individual's weight-loss goal, said system comprising:

• a. a wearable sensor device for detecting data;
• and
• b. a processing unit in electronic communication with said sensor device, said processing unit configured to accomplish the following steps, thus providing said feedback:
• (i) derive physiological and contextual data of the individual from data detected by said sensor device;
• (ii) prompt said individual to establish a weight-loss goal;
• (iii) generate a first suggestion to engage in an activity to assist said individual to achieve said weight-loss goal;
• (iv) determine weight-loss;
• (v) generate a second suggestion to engage in an activity to assist said individual to achieve said weight-loss goal if said weight-loss goal is not progressing toward the goal;
• wherein said second suggestion is based upon a determination of whether or not the individual complied with said first suggestion;
• and
• wherein said determination of whether or not the individual complied with said first suggestion is based on said derived physiological and contextual data of the individual.