Current Status of Non-invasive Diabetes Monitoring

In routine life, diabetes is usually measured by an invasive process. Although this technique is accurate, there are many drawbacks, especially if you need to take multiple readings regularly. Hence, it is necessary to develop a highly reliable non-invasive diabetes screening technology that is better than the pre-existing invasive technique. In recent investigations, human serums such as tears, saliva, urine, and respiratory secretions have been found to reflect the presence of glucose in it. These factors increase the possibility of non-invasive blood glucose level estimation. Diabetes was a rare condition in past years compared to recent times, but this has become more widespread in recent decades due to changes in the eating habits and lifestyles mismanagement of human beings. In some cases, there are chances of diabetes in newly born infants. When the body cannot produce enough insulin or cannot use its insulin, blood glucose levels rise in the body. As a result, invasive methods for measuring blood glucose levels are used, which may cause major or minor problems for patients in the long run of life. To address this issue, a low-cost, non-invasive approach for detecting diabetes is urgently required by our society. Many new technologies have been researched and implemented; each has its advantages and disadvantages. The present chapter gives a qualitative overview of various non-invasive glucose monitoring systems beneficial for diabetic patients.