Zinc and General Health
- Zinc boosts the immune system Zinc is involved in cell division and DNA replication and is therefore essential for the production of immune system cells.
- Zinc is a component of the thymic hormone which controls and facilitates the maturation of lymphocytes [1,2].
- Severe zinc deficiency depresses immune function . Mild zinc deficiency is associated with increased susceptibility to pneumonia and other infections. [4-7]
Zinc and the Common Cold
- Zinc may reduce the duration and severity of cold symptoms by acting locally as an antiviral agent and astringent.
- The effectiveness of zinc treatment (zinc lozenges, nasal sprays and nasal gels) on the severity and duration of cold symptoms remains controversial [8-12].
- A review in 2007 from 14 different studies reported that half of the studies showed a beneficial effect and half showed no effect of zinc treatment .
Zinc and Men's Health
- Zinc is needed for the production of healthy sperm and increases sperm count and motility .
- Zinc is necessary to maintain normal levels of testosterone .
- Zinc deficiency has been shown to predispose the prostrate gland to infection .
Zinc heals and protects skin
- Zinc helps maintain the integrity of skin and topical zinc preparations are used to treat a variety of skin problems.
- zinc oxide is used to treat nappy rash, chapped lips and dry skin. Zinc sulphate is used for the treatment of acne, cold sores and burns.
- Internally, zinc stimulates cell division, connective tissue formation and transport of Vitamin A from the liver to the skin, helping to protect and repair body tissues especially the skin .
Zinc and athletic performance
- Strenuous exercise causes loss of zinc through sweat and redistribution between blood plasma and red blood cells.
- Athletes may develop zinc deficiency especially when exercise is combined with high carbohydrate diets which are commonly low in zinc.
- A daily intake of zinc is required to maintain a steady state because the body has no specialized zinc storage system 
Zinc and chronic disease
- The role of zinc in the development of chronic diseases such as heart disease is an emerging field of research .
- Work by Dr. Beattie's research team suggests that zinc deficiency over a lifetime may encourage the development of the vascular disease known as atherosclerosis .
- Studies on the impact of zinc status on vascular health and disease are on-going.
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