Low Power Wireless Health Monitoring System (LoWHMS) is a sensor network which aims to monitor vital signs of a patient remotely. It provides real time feedback to medical personnel in order to alert them when life-threatening changes occur. The network is a self-healing network so that it can get reconfigured when the network links are broken. Ultra-Low power microcontrollers are used to reduce the power consumption drastically. The LoWHMS is a low cost solution which focuses on keeping doctors frequently updated about the health status of a patient and his vital signs. It also aims at eliminating physical delays arising due to lack of facilities in a particular hospital.