The shortening of the telomeric deoxyribonucleic acid at body ends is postulated to limit the period of time of human cells. In distinction, activation of the enzyme, the catalyst that synthesizes telomeric deoxyribonucleic acid, is projected to be a vital step in neoplastic cell immortalization and cancer progression. This review discusses the structure and performance of telomeres and enzyme, the role of the enzyme in cell immortalization, and therefore the effects of enzyme inactivation on traditional and cancer cells. Moreover, information on the experimental use of enzyme assays for cancer detection and designation area unit reviewed. Finally, the review considers proof concerning whether or not enzyme inhibitors can be accustomed treat human cancers. Non-prescription use of medicative herbs among cancer patients is common to round the world. The alleged anti-cancer effects of most seasoned extracts area unit in the main supported studies derived from in vitro or in vivo animal experiments. this info suggests that these seasoned extracts exert their biological result either through cytotoxic or immunomodulatory mechanisms. one amongst the active compounds chargeable for the immune effects of seasoned merchandise is within the variety of complicated polysaccharides called β-glucans. β-glucans area unit ubiquitously found in each microorganism or fungous cell walls and are concerned within the initiation of the anti-microbial response. supported in vitro studies, β-glucans act on many immune receptors together with Dectin-1, complement receptor (CR3), and TLR-2/6 and trigger a gaggle of immune cells together with macrophages, neutrophils, monocytes, natural killer cells, and nerve fiber cells. As a consequence, each innate and adaptative responses are often modulated by β-glucans and that they also can enhance opsonic and non-opsonic bodily function. In animal studies, when oral administration, the precise chains of β-glucans can't be digestible. Most β-glucans enter the proximal intestine and a few area units captured by the macrophages.