Health Care Systems have vastly improved over the recent past with the introduction of devices compatible with digital signal processing; better image processing techniques, introduction of MEMS based sensors facilitating diagnosis of various diseases. With the advent of better health care technologies research on monitoring systems have been extensive in the past few years. Various publications on this research area are based on different aspects of health monitoring including data collection from sensors, data dissemination methods and protocols, processing of sensor data as well as security and privacy of these systems. The research can also be classified according to the nature of application whether in a private scenario, for elderly patients or for monitoring in a health care centre. These proposed methods and their implementations have facilitated health care systems in multiple aspects in more ways than one