Colds (as lozenges): Zinc lozenges may help prevent cold symptoms or shorten the length of a cold, but the studies have had a high risk of bias (being sponsored by drug companies), had small numbers of participants, or used different methods and are hard to compare. Zinc is a chemical element; it has symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic table. In some respects, zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn 2+ and Mg 2+ ions are of similar size. [note 1] Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity ( electrowinning). Jafari F, Amani R, Tarrahi MJ Effect of Zinc Supplementation on Physical and Psychological Symptoms, Biomarkers of Inflammation, Oxidative Stress, and Brain-Derived Neurotrophic Factor in Young Women with Premenstrual Syndrome: a Randomized, Double-Blind, Placebo-Controlled Trial Biol Trace Elem Res. (2019 Jun 2) You should be able to get the amount of beta-carotene you need from your daily diet. What happens if I take too much beta-carotene? Koehler K, Parr MK, Geyer H, Mester J, Schänzer W Serum testosterone and urinary excretion of steroid hormone metabolites after administration of a high-dose zinc supplement Eur J Clin Nutr. (2009 Jan)

Mucositis Symptoms - Mansouri A, Hadjibabaie M, Iravani M, Shamshiri AR, Hayatshahi A, Javadi MR, Khoee SH, Alimoghaddam K, Ghavamzadeh A The effect of zinc sulfate in the prevention of high-dose chemotherapy-induced mucositis: a double-blind, randomized, placebo-controlled study Hematol Oncol. (2012 Mar) forms as a white precipitate. In stronger alkaline solutions, this hydroxide is dissolved to form zincates ( [Zn(OH) 4] 2−

But beta-carotene supplements have been found to increase the risk of lung cancer in people who smoke or have been heavily exposed to asbestos at work. What does the Department of Health and Social Care advise? Brown KH, Hambidge KM, Ranum P, Zinc fortification of cereal flours: current recommendations and research needs. Food Nutr Bull. (2010-Mar) Maggio M, De Vita F, Lauretani F, Nouvenne A, Meschi T, Ticinesi A, Dominguez LJ, Barbagallo M, Dall'aglio E, Ceda GP The Interplay between Magnesium and Testosterone in Modulating Physical Function in Men Int J Endocrinol. (2014) Testosterone - Kilic M Effect of fatiguing bicycle exercise on thyroid hormone and testosterone levels in sedentary males supplemented with oral zinc Neuro Endocrinol Lett. (2007 Oct) You should not take supplements with more than 40mg of extra zinc a day, unless your doctor tells you to. How much zinc do I need?

Maria Maares, Hajo Haase Zinc and immunity: An essential interrelation Arch Biochem Biophys. (2016 Dec 1) Cognition - Aquilani R, Baiardi P, Scocchi M, Iadarola P, Verri M, Sessarego P, Boschi F, Pasini E, Pastoris O, Viglio S Normalization of zinc intake enhances neurological retrieval of patients suffering from ischemic strokes Nutr Neurosci. (2009 Oct) Taste and smell: Zinc is very important for one of the enzymes you need so that you are able to taste and smell.IGF-1 - Rodondi A, Ammann P, Ghilardi-Beuret S, Rizzoli R Zinc increases the effects of essential amino acids-whey protein supplements in frail elderly J Nutr Health Aging. (2009 Jun) Valentiner-Branth P, Shrestha PS, Chandyo RK, Mathisen M, Basnet S, Bhandari N, Adhikari RK, Sommerfelt H, Strand TA A randomized controlled trial of the effect of zinc as adjuvant therapy in children 2-35 mo of age with severe or nonsevere pneumonia in Bhaktapur, Nepal Am J Clin Nutr. (2010 Jun)

Netter A, Hartoma R, Nahoul K Effect of zinc administration on plasma testosterone, dihydrotestosterone, and sperm count Arch Androl. (1981 Aug) Wart Severity - Al-Gurairi FT, Al-Waiz M, Sharquie KE Oral zinc sulphate in the treatment of recalcitrant viral warts: randomized placebo-controlled clinical trial Br J Dermatol. (2002 Mar)Yoshimura Y, Fujisaki K, Yamamoto T, Shinohara Y Pharmacokinetic Studies of Orally Administered Magnesium Oxide in Rats Yakugaku Zasshi. (2017 May 1) Zinc burns in air with a bright bluish-green flame, giving off fumes of zinc oxide. [44] Zinc reacts readily with acids, alkalis and other non-metals. [45] Extremely pure zinc reacts only slowly at room temperature with acids. [44] Strong acids, such as hydrochloric or sulfuric acid, can remove the passivating layer and the subsequent reaction with the acid releases hydrogen gas. [44] A deficiency of Zn can result in diminished amounts of white blood cells (the cells of the immune system) and reduced capacity to heal wounds and fight infection. Furthermore, the sense of taste is altered so that the patient cannot taste sugar and salt at normal levels. Hence, he will end up intaking more sugar and sodium than his body requires. PMS Symptoms - Jafari F, Amani R, Tarrahi MJ Effect of Zinc Supplementation on Physical and Psychological Symptoms, Biomarkers of Inflammation, Oxidative Stress, and Brain-Derived Neurotrophic Factor in Young Women with Premenstrual Syndrome: a Randomized, Double-Blind, Placebo-Controlled Trial Biol Trace Elem Res. (2019 Jun 2)