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Zinc Lozenges (60)

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Zinc Lozenges

60 vegetarian lozenges Item Catalog Number: 01561

Zinc is a mineral that stimulates the activity of approximately 300 enzymes, which are substances that promote biochemical reactions in your body.1,2 These reactions are essential for the formation of superoxide dismutase, one of the body’s most important free radical scavengers. Zinc also promotes immune function,3-6 taste sensitivity,7-9 protein and DNA synthesis,1,10,11 insulin production,12,13 reproductive organ development and sperm motility.14-16 Zinc also supports normal growth and development during pregnancy, childhood, and adolescence.17-19

Maintaining adequate levels of zinc is equally important to aging adults.20-22 As people grow older, their immune function declines, partly due to the decreasing size and function of the thymus gland. Evidence suggests that zinc may help to maintain healthy function of the thymus gland in elderly people. 23 Scientists have also found evidence that a zinc deficiency in elderly adults may contribute to impaired immune function with aging, or immunosenescence.24-26 These findings suggest that zinc plays a critical role in supporting healthy immune function with age.

Zinc Lozenges provide premium-grade zinc as gluconate and oxide in a pleasant citrus-orange naturally flavored tablet.

References
1. J Nutr. 2000 May;130(5S Suppl):1437S-46S
2. Biometals. 2005 Aug;18(4):295-303
3. Exp Gerontol. 2008 May;43(5):370-7.
4. Am J Physiol Lung Cell Mol Physiol. 2010 Jun;298(6):L744-54.
5. Exp Gerontol. 2008 May;43(5):452-61.
6. Am J Clin Nutr. 2007 Mar;85(3):837-44
7. Acta Otolaryngol Suppl. 2002;(546):129-33.
8. Cancer. 1998 May 15;82(10):1938-45.
9. Nippon Jibiinkoka Gakkai Kaiho. 1995 Jul;98(7):1135-9.
10. J Cell Physiol. 2009 Mar;218(3):558-67.
11. Wound Repair Regen. 2007 Jan-Feb;15(1):2-16.
12. Biol Trace Elem Res. 2006 Aug;112(2):109-18.
13. Cochrane Database Syst Rev. 2007 Jan 24;(1):CD005525.
14. Fertil Steril. 1999 Jun;71(6):1138-43.
15. Pak J Biol Sci. 2009 Jan 15;12(2):134-9.
16. Nutr Res. 2009 Feb;29(2):82-8.
17. J Trace Elem Med Biol. 2005;19(1):29-35.
18. Nutr Health. 2007;19(1-2):85-102.
19. Am J Clin Nutr. 2007 Feb;85(2):614S-620S
20. Biogerontology. 2006 Oct-Dec;7(5-6):429-35.
21. Exp Gerontol. 2008 May;43(5):493-8.
22. Rejuvenation Res. 2008 Feb;11(1):227-37.
23. Immun Ageing. 2009 Jun 12;6:9.
24. Exp Gerontol. 2008 May;43(5):452-61.
25. Nutr Rev. 2010 Jan;68(1):30-7.
26. J Nutr. 2009 Jan;139(1):113-9.

Supplement Facts

Serving Size 1 vegetarian lozenge
Amount Per Serving

Zinc (as zinc oxide, gluconate)

18.75 mg

Other ingredients: xylitol, croscarmellose sodium, natural citrus-orange flavors, stearic acid, citric acid, potato maltodextrin, stevia extract, arabic gum, vegetable stearate.

Dosage and Use

  • Dissolve in mouth or chew one (1) lozenge daily, or as recommended by a healthcare practitioner.

Caution

Supplemental zinc can inhibit the absorption and availability of copper. If more than 50 mg of supplemental zinc is taken daily on a chronic basis, 2 mg of supplemental copper should also be taken to prevent copper deficiency. Chronic ingestion of more than 100 mg of zinc daily may be immunosuppressive for some aspects of T-cell and NK cell function.

Warnings
  • KEEP OUT OF REACH OF CHILDREN
  • DO NOT EXCEED RECOMMENDED DOSE
  • Do not purchase if outer seal is broken or damaged.
  • When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.

To report a serious adverse event or obtain product information, contact 1-866-280-2852.

Getting Back To Basics ... How Low-Cost Zinc Helps Combat Deadly Immunosenescence

 

By Heath Ramsey

How Low-Cost Zinc Helps Combat Deadly Immunosenescence  

Zinc is required by the body for more than 2,000 transcription factors involved in gene expressions of various proteins.1 What this means in everyday language is that thousands of essential biological functions are dependent on zinc.

The medical community has known of zinc deficiency for more than 50 years, but the health imp​act of this crucial mineral has been largely ignored by global health organizations. Extensive scientific inquiry has made it clear that nutritional deficiency of zinc is widely prevalent and its morbidities are severe.1

Overwhelmingly, the elderly are deficient in zinc1. Because zinc governs so many biological functions, a simple zinc deficiency can affect multiple facets of health and development.1 The result is a decline in our body’s vigilant immune system, opening the door for an onslaught of numerous diseases. A zinc deficiency contributes to atherosclerosis, cancer, neurological disorders, autoimmune diseases, and other age-related chronic conditions.2

One target that researchers are focusing on is the fact that a zinc deficiency can cause your immune system to decline, a phenomenon known as immunosenescence. This decline in immunity places older adults at increased risk for a range of almost every serious disease, from infections and cancer.3

Fortunately, supplementing with the proper amount of zinc can provide life-saving benefits against the diseases of aging. Studies have shown that zinc supplementation in the elderly can restore normal function of the killer cells that attack virally-infected and cancerous cells as well as boost the immune system’s anti-aging mechanisms.4-6

Adequate zinc levels have been found to reduce the risk of infection as well as decrease oxidative and inflammatory markers.7

Even if zinc levels are adequate, supplementing with zinc may offer additional protection against cancer. In animals with normal zinc levels, the number of experimentally-induced tumors was 28% lower when the animals were given a modest zinc supplement.8

There is no reason that this readily available and inexpensive mineral should not be an essential component of your personal health program against the dangers of immunosenescence.

Immunosenescence: The Waning Of The Immune System

Zinc deficiency is rampant among older adults. As with so many other essentials, zinc levels decrease with age.9 But that’s only part of the problem.

Another major cause is that people simply don’t get enough of this nutrient on a daily basis. The government’s minimum recommended daily allowance (RDA) of zinc is just 15 mg. Yet 35% to 45% of people older than 60 don’t even get half of that.10-13

Scientists now believe that zinc deficiency plays a direct role in the aging of the immune system, known asimmunosenescence.14

In immunosenescence, there’s a decrease in the immune system cells that normally identify and destroy abnormal cells (such as bacteria, virally-infected cells, and cancer cells).15 That leaves older adults increasingly vulnerable to infections and cancers, while making vaccinations less effective as well.16

Immunosenescence also increases the frequency and severity of autoimmune disorders (such as rheumatoid arthritis and lupus), in which the immune system attacks and destroys healthy body tissue.16 In addition, immunosenescence leads to the loss of regulatory control, which adds to the total burden of inflammation in the body, leading to atherosclerosis, osteoporosis, and further heightening the risks of cancer.14,17

Battle Immunosenescence With Zinc

Dual Action Restores Immune Balance  

Immunosenescence is a very complex process that is still being understood by researchers. However, what scientists are now realizing is that the immune system in the elderly is the result of a continuous remodelling process.18 That means it’s possible to fight against this phenomenon of aging—for which zinc is a vital component. There are remarkable similarities between immunosenescence and zinc deficiency, similarities so striking that scientists now believe they can’t be coincidental.19,20

A deficiency in zinc reduces the activity of the thymus gland, which prevents the production of essential “killer” T-cells. This shifts the balance to “suppressor” cells that reduce the immune response.21

Low zinc levels also increase the occurrence of autoimmunity and excessive inflammation (as is seen in immunosenescence).20 Even borderline low levels of zinc can impair immune functioning and decrease the response to vaccinations.19,21 While inadequate zinc is not likely to be the only cause of immunosenescence, it appears to be one of the main contributors.

What this means to you is that by restoring zinc levels to those found in younger people, we may be able to slow immunosenescence and protect ourselves against cancer, infection, autoimmunity, and chronic inflammation.21

Zinc supplementation in the elderly has been shown to confer the following benefits:

  • Restore normal function of the killer cells that go after virally-infected and cancerous cells.4,5
  • Boost the stress response of white blood cells from older adults, providing an immune system anti-aging mechanism.6
  • Boost the immune response to vaccines, which are becoming increasingly vital to protecting older adults from dangerous infections.5,22
  • Improve cellular immunity and increase survival rates in older mice.19,23

Zinc supplementation is so widely recognized as essential to healthy immune system support that it now figures broadly in international health programs aimed at reducing the death tolls from diseases such as severe diarrhea, malaria, and tuberculosis.24-27

WHAT YOU NEED TO KNOW
Guard Immune Health With Zinc

Guard Immune Health With Zinc

  • Immunosenesc​ence, the aging of the immune system, is a major contributor to the higher rates of serious infections and cancers seen in older adults.
  • A major contributor to immunosenescence is falling zinc levels, which occur in a large proportion of people as they age.
  • Zinc deficiency, therefore, is closely related to the risk of infection and cancer, and is also being seen in obese people and those with diabetes.
  • Supplementation with zinc has been shown to enhance the aging immune system’s performance, reducing the risks of infections, cancers, and obesity/diabetes.
  • Zinc deserves a prominent place in your supplement regimen for all of these reasons.

Zinc Battles Infections

Infections, especially those of the respiratory system, are a serious threat to the health of adults over 60 years old. Supplementing with zinc can help lower the risk of these dangerous infections in older adults.

One study showed that a daily 45 mg dose of zinc reduced the incidence of all infections, including those of the respiratory tract, in elderly adults.7 And at a very high dose (80 mg/day), zinc was found to reduce overall deaths by27% over an median of 6.5 years.28 (Please note: Zinc should not be consumed at doses higher than 90 to 100 mg/day; at those doses it can have a negative effect on immunity and may produce urinary tract symptoms.3,29)

Two specific threats for which zinc has proven effective include pneumonia and influenza.

Pneumonia is one of the leading causes of death in the US for older adults.28 Pneumonia is prevalent in this age group precisely because of immunosenescence, the waning protection against infection. But remember, immunosensecence can be a direct result of zinc deficiency. That helps explain why people with low zinc status are even more likely to get pneumonia and to have a more severe infection, are more likely to need more antibiotics for longer, and are more likely to die from pneumonia, than are people with healthy zinc levels.29

Fortunately, studies show that simply restoring zinc to normal levels helps combat pneumonia, reducing its incidence by as much as 41%, cutting new antibiotic prescriptions nearly in half, and shortening the duration of the illness.30 In a two-year study of nursing home residents, daily supplementation with 20 mg of zinc and 100 micrograms of selenium decreased the average number of respiratory infections compared with patients taking a placebo.31

Another larger study showed that the same doses of zinc and selenium improved antibody production in elderly people after a vaccination against pneumonia-causing germs.32

Zinc has also been found to be beneficial against influenza, another infection that can be especially dangerous for older adults. Influenza virus infection of lung tissue produces rapid destruction of cells through inflammation andapoptosis.33 Zinc has the ability to directly combat these negative effects of influenza.

Lab studies show that zinc supplementation of cells in culture blocks the inflammatory response, shuts down the self-destructive cycle of apoptosis, and reduces the release of new viruses from the fragmented cells.33,34

Human studies confirm these results. Most importantly from a prevention standpoint, supplementation with zinc markedly enhances the response to influenza vaccines among older adults.23,32,35 An increase in anti-influenza antibody occurred in 87% of supplemented people and just 41% of controls. In response to the vaccine, supplemented subjects achieved white blood cell proliferation that was tenfold that of the control group.35

ADDITIONAL BENEFITS OF ZINC
Additional Benefits Of Zinc

Zinc has an impact on a wide variety of diseases. Today we can say with confidence that zinc plays an important role in cardiovascular disease (where it improves lipid profiles),60-66 in neurological disorders and cognition (where it may improve mental performance and decrease the risk of depression),9,67-77 and in preventing age-related macular degeneration, a leading cause of blindness in the elderly.78-83

Support Your Body’s Anti-Cancer Surveillance System

Whether you realize it or not, every one of us experiences dozens of pre-cancerous cell changes daily. The reason we don’t all develop malignancies every day is thanks to the aggressive anti-cancer surveillance by the body’s immune system, particularly the aggressive “natural killer” cells that seek out and destroy abnormal cells.36

Zinc is absolutely essential for this anti-cancer surveillance system to function properly. That’s why, when zinc levels drop, we see a substantially higher rate of cancer, especially in the mouth, esophagus, and stomach.37 The tissues of your digestive tract are particularly vulnerable because they’re more exposed to the outside toxins that we ingest.

Restoring your body’s levels of zinc prevents loss of natural killer cell function, reduces the inflammation that promotes cancer, and reduces cancer cells’ ability to grow new blood vessels.36,38-40 As a result, zinc supplementation has been associated with a reduced incidence and/or progression of tongue, esophageal, stomach, and colon cancer in animals with zinc deficiencies.8,37,41-45

Zinc offers additional protection against cancer by starving tumors of the glucose they need to grow and spread. Cancer cells take up glucose at a very high rate compared with non-malignant tissues; that’s presumably because the rapidly-growing tumors have exceptionally high energy requirements.46 Zinc supplements appear to reduce glucose uptake in malignant cells, thus reducing the availability of energy cancer cells need to replicate and progress.46

Zinc is important in cancers outside of the digestive tract as well. The risk of non-Hodgkin’s lymphoma, a common blood cancer, is 42% lower in people with higher levels of zinc compared to those with lower levels.47 And among patients with head and neck cancers, nearly 65% were found to be zinc deficient.39

Prostate cancer is also sensitive to zinc. Normally the prostate contains tenfold the amount of zinc found in other soft tissues, but zinc accumulation in prostate tissue decreases shortly after prostate cancer begins.48Supplementation restores normal prostate zinc levels and reduces levels of a promoter of tumor growth (IGF-1).48Supplementation also supports natural antioxidant enzymes in the prostate; those enzymes are impaired as the result of high oxidant stresses imposed by growing malignancies.49

Even if your zinc levels are adequate, supplementing with zinc could offer additional protection against cancer. In animals with normal zinc levels, the number of experimentally-induced tumors was 28% lower when the animals were given a modest zinc supplement.8

DIETARY SOURCES OF ZINC10
Dietary Sources Of Zinc

Food

Mg of zinc per serving

Oysters

74.0

Beef chuck roast

7.0

Lobster

3.4

Pork loin

2.9

Baked beans

2.9

Chicken

2.4

Yogurt

1.7

Cashews

1.6
  • Minimum RDA of zinc is 15 mg according to the government. Optimal supplemental doses for aging humans may be five times higher—up to 80 mg daily.86
  • Although it’s possible to get zinc from plant sources, your body can’t utilize it as well because molecules found in breads, cereals, and legumes can bind the zinc and prevent your body from absorbing it.10

Diabetes And Obesity

The science demonstrating zinc’s importance in preventing diabetes and its consequences is so strong that zinc has become widely accepted as an important supplement for those at risk for—and even those already suffering from—diabetes.

In addition, zinc is involved in the synthesis, storage, and release of insulin. Zinc deficiency is associated with insulin resistance, impaired glucose tolerance, and obesity. In a study of obese individuals supplemented with 30 mg zinc for one month, researchers found significant reductions in body weight, body mass index (BMI), and triglycerides.50

Studies show that supplementation with zinc lowers both fasting and after-meal glucose levels and reduces the long-term measure of blood glucose called hemoglobin A1c.51-55 Zinc supplementation also improves insulin sensitivity and lowers insulin levels, a major factor in people with “pre-diabetes” (impaired fasting glucose).56-58

Higher blood levels of zinc are associated with the following:

  • 10 to 15% decrease in the risk of diabetes.
  • 34 to 43% lower risk of glucose intolerance.
  • 12 to 13% reduction in central obesity.
  • 23 to 43% reduction in coronary artery disease.59

In another study, body weight and body mass index decreased following supplementation with 20 mg of zinc.58That’s particularly important because of the relationships between obesity, high insulin levels, and cancer. Zinc supplementation also markedly improves nerve conduction velocity, a measure of diabetic nerve damage.52

ZINC AND COPPER: A BALANCING ACT
Zinc and Copper: A Balancing Act

Research has shown that higher dosing of supplemental zinc has produced significant benefit.86 However, long-term supplementation of zinc at doses above around 50 mg can interfere with copper bioavailability and result in deficiency of copper.87 High intake of zinc induces the intestinal synthesis of a copper-binding protein called metallothionein.87 Metallothionein traps copper within intestinal cells and prevents its systemic absorption. Copper deficiency can lead to clinical manifestations such as anemia, low levels of neutrophils (the most abundant type of white blood cell), and bone abnormalities, including fractures.88 Low levels of copper can also lead to increased concentration of total cholesterol and LDL cholesterol, reduction of HDL cholesterol, diminished glucose tolerance, and altered cardiac rhythm.88 Individuals supplementing with more than 50 mg of zinc on a chronic basis should consider supplementing with 2 mg of copper daily to address the risk of copper deficiency associated with high zinc ingestion. Short term supplementation of high doses of zinc is unlikely to affect copper distribution in the body.87

Summary

Immunosenescence, the aging of the immune system, is a major contributor to the higher rates of serious infections and cancers seen in older adults. Although immunosenescence was previously thought of as a natural effect of aging, scientists now believe that it could be caused in part by a deficiency in zinc.

That means that something as simple as supplementing with zinc could slow or reverse immunosenescence. Studies show that supplementing with zinc reduces the risk of serious infections such as pneumonia and influenza. Lab studies also demonstrate a remarkable cancer-preventive effect of supplementary zinc. Even the twin scourges of obesity and diabetes show signs of yielding to zinc therapy, with improved measures of blood glucose and reduced body mass, as well as fewer diabetic complications such as nerve and kidney damage.

If you are not taking a zinc supplement today, you should consider it to minimize the impact of immuno-senescence on your body.

If you have any questions on the scientific content of this article, please call a Life Extension® Health Advisor at1-866-864-3027.

TABLE: ZINC AND YOUR HEALTH10

Health Concern

Impact of Insufficient Zinc

Immune Function

Increased susceptibility to pneumonia and other infections28

Wound Healing

Slow or incomplete wound healing84

Gastrointestinal 
Health

Worsening of inflammatory bowel diseases and increased production of inflammatory cytokines85

Vision

Increased risk of age-related macular degeneration (AMD)78-83

Cardiovascular Health

Increased plasma lipids, markers of atherosclerosis62

Cancer

Diminished immune surveillance against cancer cells39

Diabetes

Decreased blood sugar control55

Neurological 
and Mental Health

Increased risk of depression; decreased cognitive performance9,77

 

References

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  3. Pae M, Meydani SN, Wu D. The role of nutrition in enhancing immunity in aging. Aging Dis. 2012 Feb;3(1):91-129.
  4. Kahmann L, Uciechowski P, Warmuth S, Malavolta M, Mocchegiani E, Rink L. Effect of improved zinc status on T helper cell activation and TH1/TH2 ratio in healthy elderly individuals. Biogerontology. 2006 Oct-Dec;7(5-6):429-35.
  5. Duchateau J, Delepesse G, Vrijens R, Collet H. Beneficial effects of oral zinc supplementation on the immune response of old people. Am J Med. 1981 May;70(5):1001-4.
  6. Putics A, Vodros D, Malavolta M, Mocchegiani E, Csermely P, Soti C. Zinc supplementation boosts the stress response in the elderly: Hsp70 status is linked to zinc availability in peripheral lymphocytes. Exp Gerontol.2008 May;43(5):452-61.
  7. Prasad AS, Beck FW, Bao B, et al. Zinc supplementation decreases incidence of infections in the elderly: effect of zinc on generation of cytokines and oxidative stress. Am J Clin Nutr. 2007 Mar;85(3):837-44.
  8. Sun J, Liu J, Pan X, et al. Effect of zinc supplementation on N-nitrosomethylbenzylamine-induced forestomach tumor development and progression in tumor suppressor-deficient mouse strains.Carcinogenesis. 2011 Mar;32(3):351-8.
  9. Marcellini F, Giuli C, Papa R, et al. Zinc in elderly people: effects of zinc supplementation on psychological dimensions in dependence of IL-6 -174 polymorphism: a Zincage study. Rejuvenation Res. 2008 Apr;11(2):479-83.
  10. Available at: http://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/. Accessed December 12, 2013
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  12. Mocchegiani E, Romeo J, Malavolta M, et al. Zinc: dietary intake and impact of supplementation on immune function in elderly. Age (Dordr). 2012 Jan 6.
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  14. Mocchegiani E, Malavolta M, Marcellini F, Pawelec G. Zinc, oxidative stress, genetic background and immunosenescence: implications for healthy ageing. Immun Ageing. 2006;3:6.
  15. Varin A, Larbi A, Dedoussis GV, et al. In vitro and in vivo effects of zinc on cytokine signalling in human T cells.Exp Gerontol. 2008 May;43(5):472-82.
  16. Sidler C, Wóycicki R, Ilnytskyy Y, Metz G, Kovalchuk I, Kovalchuk O. Immunosenescence is associated with altered gene expression and epigenetic regulation in primary and secondary immune organs. Front Genet.2013 Oct 18;4:211.
  17. Mazzatti DJ, Malavolta M, White AJ, et al. Effects of interleukin-6 -174C/G and metallothionein 1A +647A/C single-nucleotide polymorphisms on zinc-regulated gene expression in ageing. Exp Gerontol. 2008 May;43(5):423-32.
  18. Ongrádi J, Kövesdi V. Factors that may impact on immunosenescence: an appraisal. Immun Ageing. 2010 Jun 14;7:7.
  19. Wong CP, Song Y, Elias VD, Magnusson KR, Ho E. Zinc supplementation increases zinc status and thymopoiesis in aged mice. J Nutr. 2009 Jul;139(7):1393-7.
  20. Haase H, Rink L. The immune system and the impact of zinc during aging. Immun Ageing. 2009;6:9.
  21. Haase H, Mocchegiani E, Rink L. Correlation between zinc status and immune function in the elderly.Biogerontology. 2006 Oct-Dec;7(5-6):421-8.
  22. Ahmed T, Arifuzzaman M, Lebens M, Qadri F, Lundgren A. CD4+ T-cell responses to an oral inactivated cholera vaccine in young children in a cholera endemic country and the enhancing effect of zinc supplementation. Vaccine. 2009 Dec 11;28(2):422-9.
  23. Mocchegiani E, Malavolta M, Muti E, et al. Zinc, metallothioneins and longevity: interrelationships with niacin and selenium. Curr Pharm Des. 2008;14(26):2719-32.
  24. Rao VB, Pelly TF, Gilman RH, et al. Zinc cream and reliability of tuberculosis skin testing. Emerg Infect Dis. 2007 Jul;13(7):1101-4.
  25. Raqib R, Roy SK, Rahman MJ, et al. Effect of zinc supplementation on immune and inflammatory responses in pediatric patients with shigellosis. Am J Clin Nutr. 2004 Mar;79(3):444-50.
  26. Rahman MJ, Sarker P, Roy SK, et al. Effects of zinc supplementation as adjunct therapy on the systemic immune responses in shigellosis. Am J Clin Nutr. 2005 Feb;81(2):495-502.
  27. Zeba AN, Sorgho H, Rouamba N, et al. Major reduction of malaria morbidity with combined vitamin A and zinc supplementation in young children in Burkina Faso: a randomized double blind trial. Nutr J. 2008;7:7.
  28. Barnett JB, Hamer DH, Meydani SN. Low zinc status: a new risk factor for pneumonia in the elderly? Nutr Rev.2010 Jan;68(1):30-7.
  29. Johnson AR, Munoz A, Gottlieb JL, Jarrard DF. High dose zinc increases hospital admissions due to genitourinary complications. J Urol. 2007 Feb;177(2):639-43.
  30. Fischer Walker C, Black RE. Zinc and the risk for infectious disease. Annu Rev Nutr. 2004;24:255-75.
  31. Girodon F, Lombard M, Galan P, et al. Effect of micronutrient supplementation on infection in institutionalized elderly subjects: a controlled trial. Ann Nutr Metab. 1997;41(2):98-107.
  32. Girodon F, Galan P, Monget AL, et al. Impact of trace elements and vitamin supplementation on immunity and infections in institutionalized elderly patients: a randomized controlled trial. MIN. VIT. AOX. geriatric network. Arch Intern Med. 1999 Apr 12;159(7):748-54.
  33. Onose A, Hashimoto S, Hayashi S, et al. An inhibitory effect of A20 on NF-kappaB activation in airway epithelium upon influenza virus infection. Eur J Pharmacol. 2006 Jul 17;541(3):198-204.
  34. Srivastava V, Rawall S, Vijayan VK, Khanna M. Influenza a virus induced apoptosis: inhibition of DNA laddering & caspase-3 activity by zinc supplementation in cultured HeLa cells. Indian J Med Res. 2009 May;129(5):579-86.
  35. Langkamp-Henken B, Bender BS, Gardner EM, et al. Nutritional formula enhanced immune function and reduced days of symptoms of upper respiratory tract infection in seniors. J Am Geriatr Soc. 2004 Jan;52(1):3-12.
  36. Chowdhury BA, Chandra RK. Effect of zinc administration on cadmium-induced suppression of natural killer cell activity in mice. Immunol Lett. 1989 Oct;22(4):287-91.
  37. Fong LY, Jiang Y, Riley M, et al. Prevention of upper aerodigestive tract cancer in zinc-deficient rodents: inefficacy of genetic or pharmacological disruption of COX-2. Int J Cancer. 2008 Mar 1;122(5):978-89.
  38. Ibs KH, Rink L. Zinc-altered immune function. J Nutr. 2003 May;133(5 Suppl 1):1452S-6S.
  39. Prasad AS. Zinc in human health: effect of zinc on immune cells. Mol Med. 2008 May-Jun;14(5-6):353-7.
  40. Prasad AS, Beck FW, Snell DC, Kucuk O. Zinc in cancer prevention. Nutr Cancer. 2009;61(6):879-87.
  41. Dani V, Goel A, Vaiphei K, Dhawan DK. Chemopreventive potential of zinc in experimentally induced colon carcinogenesis. Toxicol Lett. 2007 Jun 15;171(1-2):10-8.
  42. Malhotra A, Chadha VD, Nair P, Dhawan DK. Role of zinc in modulating histo-architectural and biochemical alterations during dimethylhydrazine (DMH)-induced rat colon carcinogenesis. J Environ Pathol Toxicol Oncol.2009;28(4):351-9.
  43. Chadha VD, Dhawan DK. Ultrastructural changes in rat colon following 1,2-dimethylhydrazine-induced colon carcinogenesis: protection by zinc. Oncol Res. 2010;19(1):1-11.
  44. Chadha VD, Garg ML, Dhawan D. Influence of extraneous supplementation of zinc on trace elemental profile leading to prevention of dimethylhydrazine-induced colon carcinogenesis. Toxicol Mech Methods. 2010 Oct;20(8):493-7.
  45. Fong LY, Jiang Y, Rawahneh ML, et al. Zinc supplementation suppresses 4-nitroquinoline 1-oxide-induced rat oral carcinogenesis. Carcinogenesis. 2011 Apr;32(4):554-60.
  46. Chadha VD, Dhawan DK. In vitro (1)(4)C-labeled amino acid uptake changes and surface abnormalities in the colon after 1,2-dimethylhydrazine-induced experimental carcinogenesis: protection by zinc. J Environ Pathol Toxicol Oncol. 2011;30(2):103-11.
  47. Kelemen LE, Cerhan JR, Lim U, et al. Vegetables, fruit, and antioxidant-related nutrients and risk of non-Hodgkin lymphoma: a National Cancer Institute-Surveillance, Epidemiology, and End Results population-based case-control study. Am J Clin Nutr. 2006 Jun;83(6):1401-10.
  48. Prasad AS, Mukhtar H, Beck FW, et al. Dietary zinc and prostate cancer in the TRAMP mouse model. J Med Food. 2010 Feb;13(1):70-6.
  49. Banudevi S, Elumalai P, Sharmila G, Arunkumar R, Senthilkumar K, Arunakaran J. Protective effect of zinc on N-methyl-N-nitrosourea and testosterone-induced prostatic intraepithelial neoplasia in the dorsolateral prostate of Sprague Dawley rats. Exp Biol Med (Maywood). 2011 Sep 1;236(9):1012-21.
  50. Payahoo L, Ostadrahimi A, Mobasseri M, et al. Effects of zinc supplementation on the anthropometric measurements, lipid profiles and fasting blood glucose in the healthy obese adults. Adv Pharm Bull.2013;3(1):161-5.
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