The Digestive System The role of the digestive system is to break down and assimilate the nutrients from the food we eat and redistribute those nutrients to all tissues in the body via the blood circulation or the lymphatic system, so our cells can receive the required energy to function. The digestive system requires nutrients to function: for tissue function or the release of digestive juices and enzymes. A steady supply of protein (amino acids) is, therefore, required. The intrinsic factor, which is essential to the assimilation of vitamin B12, is a protein (glycoprotein). Histamine is also required to produce hydrochloric acid. Hydrochloric acid (and other gastric juices. e.g., potassium chloride and sodium chloride) aid digestion by creating the optimal pH for pepsin and gastric lipase, which helps your body to break down, digest, and absorb nutrients, including protein and large fatty molecules. It also eliminates bacteria and viruses in the stomach, protecting your body from infection. (1) (2) 1 Clinical Education. (2011). The Role of HCL In Gastric Function And Health. Available at: www.clinicaleducation.org/resources/reviews/the-role-of-hcl-in-gastric-function-and-health/ 2 Widmaier, EP. Raff, H. Strang, KT. (2006). Vander’s Human Physiology: The Mechanisms of Body Function. Boston: McGraw-Hill; 2006. Overview of Acid Secretion. Merck Manuals Professional Edition 3 Puckey, M. (2022). Omeprazole. Available at: https://www.drugs.com/omeprazole.html 4 Source: NHS UK 5 Insogna K. (2009) The effect of proton pump-inhibiting drugs on mineral metabolism. American Journal of Gastroenterology. 104(Suppl. 2): S2–S4 6 Farina, C. Gagliardi, S. (2002) Selective inhibition of osteoclast vacuolar H+-ATPase. Current Pharmaceutical Design 8, pp. 2033–2048 7 Food and Drug Administration (FDA) (2010). FDA Drug Safety Communication: Possible increased risk of fractures of the hip, wrist, and spine with the use of proton pump inhibitors. Silver Spring, MD: US Food and Drug Administration. Available at: http://www.fda.gov/Drugs/DrugSafety/postmarketdrugsafetyInformationforpatientsandproviders/ucm213206.htm#Tabl eofEpidemiologicalStudiesevaluatingfractureriskwithprotonpumpinhibitors 8 Humphrey, ML. Barkhordari, N. Kaakeh, Y. (2012). Effects of omeprazole on vitamin and mineral absorption and metabolism. The Journal of pharmacy technology: jPT: official publication of the Association of Pharmacy Technicians. 28(6): pp.243-248 9 Sarzynski, E. et al. (2011) Association between proton pump inhibitor use and anemia: A retrospective cohort study. Digestive Diseases and Science. 56: pp. 2349–2553 10 Heidelbaugh JJ. (2013). Proton pump inhibitors and risk of vitamin and mineral deficiency: Evidence and clinical implications. Therapeutic Advances in Drug Safety. 4(3), pp. 125–133. doi:10.1177/2042098613482484 11 Carmel R. (2008). How I treat cobalamin (vitamin B12) deficiency. Blood. 112(6): pp. 2214-2221. doi: 10.1182/blood- 2008-03-040253 12 Frassinetti, S. et al. (2006). The role of zinc in life: A review. Journal of Environmental Pathology, Toxicology and Oncology. 25(3), pp. 597–610 13 Plum, LM. Rink, L. Haase, H. (2010). The essential toxin: Impact of zinc on human health. International Journal of Environmental Research and Public Health. 7(4), pp. 1342–1365. doi: 10.3390/ijerph7041342
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