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Cold sores are caused by the herpes simplex virus (type 1) and are transmitted orally or via respiratory routes. The virus produces infection in the mouth, gums and the skin. The virus lays dormant in the nerve ganglia and recurs following periods of stress. Which factors can trigger cold sores? These include ultraviolet radiation - exposure to the sun, hormonal changes, infection and emotional stress. A healthy immune system is of paramount importance for the control and prevention of cold sores. Are there any dietary or lifestyle recommendations? Avoiding foods such as almonds, bacon, carob, peanuts, seeds and cereals which contain the amino acid, arginine, which is believed to help growth of the herpes simplex virus. Direct sunlight should also be avoided. The supplement Lysine appears to slow replication of the virus. A poultice made from the grain of this plant is traditionally used on the skin for cold sores and shingles.
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