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Fast growing age demographics, sedentary lifestyle, increasing chronic diseases, shortage of medical facilities and huge costs for healthcare treatment have arisen the need for ubiquitous as well as inexpensive healthcare services. A huge part of the cost in providing healthcare is utilized in frequent patient's visits and continual monitoring of the chronically ill patients. Wireless Body Area Network (WBAN) has offered promising outcomes for Quality of Service (QoS) in the healthcare system. Nevertheless, it is constrained with restricted battery power of sensors, security and privacy issues for its complete adoption. Henceforth, security, privacy and energy efficiency issues need to be addressed well with optimal solutions. The current work proposes an Optimized Energy Efficient Secure Routing Protocol (OEESR) that minimizes network congestion, provides secure data transmission and selects the most optimal route in the network. The performance of OEESR protocol is contrasted with other state-of-art protocols. The results show that OEESR is highly secure and achieves 90% throughput with 8.8% of overall energy consumption. It is having only 13% of packet dropping rate with respect to transmission power.INDEX TERMS Compression, energy efficient, routing protocol, security, wireless body area network.

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