The need for health monitoring has significantly increased by a huge number around the world with the increasing number of health problems and diseases. Over the past few decades, life expectancy has been on the rise in most countries, thanks to advancements in medicine, public health initiatives, and improved personal and environmental hygiene. However, this has resulted in an aging population, combined with a decline in birth rates, leading to potential socio-economic challenges in the near future. It is crucial to develop cost-effective and userfriendly healthcare systems to address the needs of the elderly population. One solution to this problem is remote health monitoring through wearable sensors, actuators, and modern communication and information technologies. This approach allows for easy and efficient monitoring of elderly patient's health and well-being in their homes, reducing the need for costly hospitalization. Non-invasive blood glucose monitoring technology has become a subject of global research, providing relief to a large number of patients. These remote monitoring systems also allow healthcare professionals to monitor patients' vital signs in realtime and provide feedback from distant facilities.This paper makes a survey on several recent ICT based methods used for non invasive health monitoring system..