What is it about a cold sore; it tends to pop up just when you don’t need it the most, typically when you are low, stressed or both. Well that’s the reason. If you are low, stressed or recovering from an illness you are at your most vulnerable to their attack. Your immune guard is off duty. Cold sores are caused by the herpes simplex virus (HSV) that is carried in some 80% of the adult population. The virus enters the body through the skin or mucous membranes of the mouth or genitals. There are 2 types of HSV, aptly named type 1 and type 2! HSV-1 is the classic cold sore suffered by so many. HSV-2 is more restricted to the genital area, however cross infection can occur. Estimates have 1 in 5 people suffering from recurrent bouts of cold sores many of which could be prevented by taking stock of diet and boosting the immune system. Taking the amino acid called L-Lysine at a single dose of 500mg per day for prevention or twice a day if you feel one on the brew. Lysine interferes with the reproductive cycle of HSV and slows its progression. For many it’s a simple answer that works. There is also great value in looking to your diet. Certain foods can promote the growth of HSV, those foods high in another amino acid called arginine. Following a low arginin diet offers real benefit in many cases eg. nuts, chocolate (sorry!), seeds oats, lentils and brown rice. In addition keep your coffee intake down since caffeine increases the amount of arginine your body uses. Finally, consider using the homeopathic preparation called ZymaDerm-2. This contains homeopathic concentrations of iodine, melissa, geranium and peppermint. Applied locally ZymaDerm-2 can improve healing and kill off the local HSV flare up.