We consider it quite a feat to escapewinter without a single cold. However, research is beginning to indicate that a healthydiet may help strengthen the immune system and give your body the best chance of fightingcolds. To date, the only specific cold treatmentsavailable from your doctor or pharmacist are designed to deal with symptoms such as sorethroats, runny or stuffy noses, coughing, sneezing and sleeplessness. Very little adviceis given on diet for the simple reason that there is little research-based evidence tosuggest that what you eat has much effect once the virus has taken hold.