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Sinclair S. Male infertility: nutritional and environmental considerations. Altern Med Rev. 2000;5(1):28-38. A strong relationship exists between zinc and copper. Too much of one can cause a deficiency in the other. If you take zinc, including zinc in a multivitamin, you should also take copper. Some commonly used ingredients that aren’t vegan-friendly include digestive enzymes like lipase, caprylic acid from milk, gelatin, and magnesium stearate, which is often pork-derived. It is best to wait for a final diagnosis of deficiency before taking supplements, as the symptoms commonly associated with low magnesium levels could be the cause of another health issue. Your body doesn't need a large amount of zinc. The recommended daily allowance for adults is 8 - 11 mg. It’s common to have slightly low levels of zinc, but taking a multivitamin, plus eating a healthy diet, should give you all the zinc you need.
Meydani SN, Barnett JB, Dallal GE, Fine BC, Jacques PF, Leka LS, Hamer DH. Serum zinc and pneumonia in nursing home elderly. Am J Clin Nutr. 2007;86(4):1167-73. Phytates in cereals and soy inhibit absorption of zinc (except zinc bisglycinate found in Metabolics zinc formula, as shown in the study, “Bioavailability_of_zinc_glycinate_in_comparison_with_zinc_sulphate_in_the_presence_of_dietary_phytate_in_an_animal_model_with_Zn-65_labelled_rats”). Type 2 diabetes: Increasing the amount of magnesium in the diet might reduce the risk of type 2 diabetes. Magnesium helps break down sugars and might decrease insulin resistance.By acting as transcription factors and binding to DNA, zinc finger proteins can regulate gene expression. In addition to being manufactured in an NSF-registered GMP facility, each product has a certificate of analysis (COA) that’s available for consumers to confirm the quality and accuracy of a specific product. Phytate, which is a natural component of plants, severely decreases intestinal zinc bioavailability and is regarded as the main nutritional inhibitor of zinc absorption. Notably, the term phytate includes magnesium, calcium, or potassium salts of phytic acid and comprises a mixture of myo-inositol hexaphosphates, pentaphosphates, tetraphosphates, and triphosphates [ 153]. Actually, tetraphosphates and triphosphates were described to have little impact on zinc absorption, whereas inositol hexaphosphates and pentaphosphates severely impaired intestinal zinc availability in in vivo studies [ 153, 157, 158]. Nevertheless, phytate can be hydrolyzed by phytase, which is an enzyme that degrades the molecule to tetraphosphates and triphosphates, consequently increasing zinc availability [ 159, 160]. In contrast to sheep and pigs, which are able to degrade phytate with their own intestinal phytase, levels of this enzyme in human small intestine are very low and, thus, phytate degradation is highly dependent on phytogenic and microbiotic phytase [ 153, 159, 161, 162]. Phytogenic phytase, particularly in grains, can be activated during fermentation and food processing [ 159, 160, 163], which, subsequently, enhances zinc absorption [ 163]. Cho E, Stampfer MJ, Seddon JM, et al. Prospective study of zinc intake and the risk of age-related macular degeneration. Ann Epidemiol. 2001;11(5):328-336.
Zinc has also been found to have a role in ‘apoptosis’ (cell death), modulating the activity of cell signalling enzymes, influencing hormone release and nerve impulse transmission , which is discussed in the paper, Zinc in Cellular Regulation: The Nature and Significance of “Zinc Signals” . The passage of zinc into the body Belongia EA, Berg R, Liu K. A randomized trial of zinc nasal spray for the treatment of upper respiratory illness in adults. Am J Med. 2001;111(2):103-108.Research has shown that less than 40 mg a day is a safe amount to take over time, but researchers are not sure what happens if more is taken over a long period. Additional concerns have been raised about combining multivitamins and additional zinc supplements and an increased risk of dying from prostate cancer. Speak with physician. Low dietary zinc status has been associated with low circulating concentrations of several hormones including testosterone, in some zinc research papers.
While it’s not always obvious, some supplements can contain animal-derived ingredients, making the product unsuitable for vegans. The conversion of retinol to retinaldeyde (retinal) is regulated by zinc via the zinc-dependent enzyme, retinol dehydrogenase, making it very important for eye health. The conversion of retinol to retinal is a critical step in the visual cycle in the retina of the eye. Zinc is believed, according to this article on zinc and the eye, to affect photoreceptor plasma membranes, regulate the light-rhodopsin reaction, modulate synaptic transmission, and act as an antioxidant.Zinc is lost through the skin and kidneys (combined loss of 0.5-0.8mg/day), more zinc being lost when the body sweats more, as in hot climates and during strenuous exercise. Approximately half of all zinc eliminated from the body is lost through the shedding of epithelial cells in the gastro intestinal tract (0.5- 3mg/day) and, although a considerable amount is secreted through both biliary and intestinal secretions, most of the secretions are reabsorbed regulating the zinc balance. Starvation and muscle breakdown also increase zinc loss through the urine. All Peak Performance supplements undergo third-party testing for quality and accuracy. They’re also manufactured following CGMP regulations and standards. Cai J, Nelson KC, Wu M, Sternberg P Jr, Jones DP. Oxidative damage and protection of the RPE. Prog Retin Eye Res. 2000;19(2):205-221.
Still, determining the best dosage for people with colds requires further research. Maintain healthy skin
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Often, older people find that muscle deterioration is related to low levels of zinc. 8. Supports Growth In Infants Grahn BH, Paterson PG, Gottschall-Pass KT, Zhang Z. Zinc and the eye. J Am Coll Nutr. 2001;20(2 Suppl):106-118. Magnesium glycinate can help improve these levels, which in turn can help the body regulate processes such as blood pressure, blood sugar levels, and muscle and nerve function. Studies suggest that zinc supplements may help support wound healing and immune response, improve certain aspects of skin health, reduce the length and severity of respiratory infections, and lower markers of oxidative stress ( 11, 12, 13, 14, 15). The UL for zinc is currently set at 40 mg per day. Avoid consuming more than 40 mg per day unless under medical supervision ( 1).
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