1,5 AG is a six carbon chain monosaccharide and is one of the major polyols present in humans. The approximate normal levels of 1,5AG are about 20 -40 µg/mL. The main source of 1,5AG is diet containing carbohydrates, and this 1,5AG undergoes similar metabolic pathways like other saccharides and is distributed in all organs and tissues. Once DM is confirmed and treatment initiated, it is important to monitor glycemic control at regular intervals of time. While HbA1c has been used as a gold standard to monitor diabetic control during the preceding 2-3 months, GA and FA were used to monitor short time glycemic control. But none of the above three serves to monitor glycemic excursion after meals. 1,5AG has been emerging as an alternative short-term diabetic control monitoring marker to assess short term glycemic excursions. 1,5 AG has also been found to be useful to monitor CVD, CLD patients as well in the clinical usefulness of subtypes of DM. This review article gives a condensed version of research findings during the last two decades and will be very useful for future researchers to expand the clinical usefulness of 1,5AG in other areas of human health.