[1] Andriollo-Sanchez M, Hininger-Favier I, Meunier N, et al. Zinc intake and status in middle-aged and older European subjects: The zenith study. Eur J Clin Nutr, 2005; 59, S37-41. doi:  10.1038/sj.ejcn.1602296
[2] Meunier N, O'Connor JM, Maiani G, et al. Importance of zinc in the elderly: The ZENITH study. Eur J Clin Nutr, 2005; 59, S1-4. https://www.researchgate.net/publication/7511498_Importance_of_zinc_in_the_elderly_The_ZENITH_study
[3] Roohani N, Hurrell R, Kelishadi R, et al. Zinc and its importance for human health: An integrative review. J Res Med Sci, 2013; 18, 144-57. http://jrms.mui.ac.ir/index.php/jrms/article/view/8963/0
[4] Jalali MT, Dayer D, Haghighizadeh MH, et al. Very high prevalence of zinc deficiency in elderly hospitalized patients in ahvaz, iran. Saudi Med J, 2011; 32, 314-5. https://www.researchgate.net/publication/50305166_Very_high_prevalence_of_zinc_deficiency_in_elderly_hospitalized_patients_in_Ahvaz_Iran
[5] Yasuda H, Tsutsui T. Infants and elderlies are susceptible to zinc deficiency. Sci Rep, 2016; 6, 21850. doi:  10.1038/srep21850
[6] Kvamme JM, Gronli O, Jacobsen BK, et al. Risk of malnutrition and zinc deficiency in community-living elderly men and women: The Tromsø study. Public Health Nutr, 2015; 18, 1907-13. doi:  10.1017/S1368980014002420
[7] Sun R, Cao H, Zhu X, et al. Current aging research in China. Protein Cell, 2015; 6, 314-21. doi:  10.1007/s13238-015-0145-5
[8] Association CN. Chinese dietary reference intakes. Chinese science publishing, Beijing, China, 2014.
[9] King JC, Lowe NM, Jackson MJ, et al. The double isotope tracer method is a reliable measure of fractional zinc absorption. Eur J Clin Nutr, 1997; 51, 787-8. doi:  10.1038/sj.ejcn.1600489
[10] Sparacino G, Shames DM, Vicini P, et al. Double isotope tracer method for measuring fractional zinc absorption: Theoretical analysis. Am J Physiol Endocrinol Metab, 2002; 282, E679-87. doi:  10.1152/ajpendo.00113.2001
[11] Li M, Wu J, Ren T, et al. Effect of nafeedta-fortified soy sauce on zinc absorption in children. Food Funct, 2015; 6, 788-92. doi:  10.1039/C4FO00722K
[12] Schuette SA, Janghorbani M, Young VR, et al. Dysprosium as a nonabsorbable marker for studies of mineral absorption with stable isotope tracers in human subjects. J Am Coll Nutr, 1993; 12, 307-15. doi:  10.1080/07315724.1993.10718315
[13] Miller LV, Sheng XY, Hambidge KM, et al. The use of dysprosium to measure endogenous zinc excretion in feces eliminates the necessity of complete fecal collections. J Nutr, 2010; 140, 1524-8. doi:  10.3945/jn.109.116889
[14] Bel-Serrat S, Stammers AL, Warthon-Medina M, et al. Factors that affect zinc bioavailability and losses in adult and elderly populations. Nutr Rev, 2014; 72, 334-52. doi:  10.1111/nure.2014.72.issue-5
[15] WHO. Trace elements in human nutrition and health. Geneva, 1996.
[16] Brown KH, Rivera JA, Bhutta Z, et al. International zinc nutrition consultative group (izincg) technical document #1. Assessment of the risk of zinc deficiency in populations and options for its control. Food Nutr Bull, 2004; 25, S99-203. doi:  10.1177/15648265040251S204
[17] Couzy F, Kastenmayer P, Mansourian R, et al. Zinc absorption in healthy elderly humans and the effect of diet. Am J Clin Nutr, 1993; 58, 690-4. https://www.researchgate.net/publication/14961166_Zinc_absorption_in_healthy_elderly_and_the_effect_of_diet
[18] Turnlund JR, Durkin N, Costa F, et al. Stable isotope studies of zinc absorption and retention in young and elderly men. J Nutr, 1986; 116, 1239-47. http://europepmc.org/abstract/MED/3746461
[19] Kim J, Paik HY, Joung H, et al. Zinc supplementation reduces fractional zinc absorption in young and elderly korean women. J Am Coll Nutr, 2004; 23, 309-15. doi:  10.1080/07315724.2004.10719373
[20] Hunt JR, Beiseigel JM, Johnson LK. Adaptation in human zinc absorption as influenced by dietary zinc and bioavailability. Am J Clin Nutr, 2008; 87, 1336-45. https://naldc.nal.usda.gov/download/18475/PDF
[21] Ansari MS, Miller WJ, Neathery MW, et al. Zinc metabolism and homeostasis in rats fed a wide range of high dietary zinc levels. Proc Soc Exp Biol Med, 1976; 152, 192-4. doi:  10.3181/00379727-152-39358
[22] King JC, Shames DM, Woodhouse LR. Zinc homeostasis in humans. J Nutr, 2000; 130, 1360S-6S. https://www.cabdirect.org/cabdirect/abstract/20001420108
[23] King JC. Does zinc absorption reflect zinc status? Int J Vitam Nutr Res, 2010; 80, 300-6. doi:  10.1024/0300-9831/a000037
[24] Tran CD, Miller LV, Krebs NF, et al. Zinc absorption as a function of the dose of zinc sulfate in aqueous solution. Am J Clin Nutr, 2004; 80, 1570-3. https://www.researchgate.net/publication/8141804_Zinc_absorption_as_a_function_of_the_dose_of_zinc_sulfate_in_aqueous_solution
[25] Jile Chang, YW. Chinese residents nutrition and health condition monitoringcomprehensive report for 2010-2013. Peking University Medical Press, Beijing, China, 2016.
[26] Lonnerdal B. Dietary factors influencing zinc absorption. J Nutr, 2000; 130, 1378S-83S. https://ucdavis.pure.elsevier.com/en/publications/dietary-factors-influencing-zinc-absorption
[27] Troesch B, Jing H, Laillou A, et al. Absorption studies show that phytase from aspergillus niger significantly increases iron and zinc bioavailability from phytate-rich foods. Food Nutr Bull, 2013; 34, S90-101. doi:  10.1177/15648265130342S111
[28] Etcheverry P, Hawthorne KM, Liang LK, et al. Effect of beef and soy proteins on the absorption of non-heme iron and inorganic zinc in children. J Am Coll Nutr, 2006; 25, 34-40. doi:  10.1080/07315724.2006.10719512
[29] Zhang B, Zhai FY, Du SF, et al. The china health and nutrition survey, 1989-2011. Obes Rev, 2014; 15, 2-7. http://urbachina.hypotheses.org/8598
[30] Aggett PJ, Bresson J, Haschke F, et al. Recommended dietary allowances (rdas), recommended dietary intakes (rdis), recommended nutrient intakes (rnis), and population reference intakes (pris) are not ‘recommended intakes’. J Pediatr Gastroenterol Nutr, 1997; 25, 236-41. doi:  10.1097/00005176-199708000-00022
[31] Yang L, Yang X, Piao J, et al. Studies on zinc bioavailability from a representative diet in chinese urban women of childbearing age using a double label stable isotope technique. J Trace Elem Med Biol, 2005; 19, 159-64. doi:  10.1016/j.jtemb.2005.09.001
[32] Kim J, Paik HY, Joung H, et al. Effect of dietary phytate on zinc homeostasis in young and elderly korean women. J Am Coll Nutr, 2007; 26, 1-9. doi:  10.1080/07315724.2007.10719579
[33] Kim J, Paik HY, Joung H, et al. Plasma zinc but not the exchangeable zinc pool size differs between young and older korean women. Biol Trace Elem Res, 2011; 142, 130-6. doi:  10.1007/s12011-010-8758-2