London: Researchers have found that a compound found in chicken soup – carnosine – helps the body’s immune system to fight the early stages of flu.But this benefit ended as soon as the soup was excreted from the body, they wrote in the American Journal of Therapeutics.Chicken soup’s benefits have been identified before. Over a decade ago, Dr Stephen Rennard, of the University of Nebraska Medical Center, Omaha, wanted to find out why his wife’s recipe for chicken soup was so healing.Using blood samples from volunteers, he showed that the soup inhibited the movement of the most common type of white blood cell, neutrophils, which defend against infection.Dr Rennard theorised that by inhibiting the migration of these infection-fighting cells in the body, chicken soup helps reduce upper respiratory cold symptoms. But he couldn’t identify the exact ingredients in the soup that made it effective against colds, the Daily Mail reported.The tested soup contained chicken, onions, sweet potatoes, parsnips, turnips, carrots, celery stems, parsley, salt and pepper.The researchers also found many commercial soups had a similar inhibitory effect. It is probable that the combination of nutrients worked in synergy to provide the beneficial effect.Another study, from Miami, looked at how consuming it affected airflow and mucus in the noses of 15 volunteers who drank cold water, hot water or chicken soup.It proved what ENT surgeons (experts in the upper airways, including the larynx) have long known: hot fluids help increase the movement of nasal mucus. This in turn clears the airways, easing congestion.But soup did a better job than the hot water as it also improves the function of protective cilia, the tiny hairlike projections in the nose that prevent contagions from entering the body.Also, researchers at the University of Nebraska found the combination of vegetables and poultry in soup could help alleviate respiratory tract inflammation that results in feeling bunged-up.All nutrients have some involvement in the complex workings of the immune system.
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