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A cold sore develops when the Herpes simplex virus is active and replicating itself, a process that uses large amounts of the amino acid arginine.
Another amino acid called lysine competes with arginine for absorption into the cells and tissues, and so is one of the body’s natural methods of resisting cold sore outbreaks.
Increasing your consumption of lysine limits the amount of arginine available for the virus to use for replication, and consequently supports your body’s defences against cold sore outbreaks.
Lysine-rich foods include vegetables, legumes, fish, sprouts and dairy products. Foods containing arginine (which should be avoided by cold sore sufferers) include chocolate, nuts, oats, carob, coconut and soya beans.
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