Scientists discovered origin of coryza
The main cause of this illness is becoming too cold. Though this version was common truth for a long time for all mothers, now it is proven scientifically.
According to investigation of British scientists, if you don`t wear hat in winter and your legs are often wet, then you are potential victim of coryza virus. Becoming cold blood vessels in nose converge and stop to resist various viruses.
Not it is proven that grandmother`s advices to wear hat and keep legs dry actually protect us from catching a cold.
By the way, another old recipe - use of vitamin C as precaution from cold and coryza - can be forgotten. Australian scientists proved that it doesn`t influence on catarrhal illnesses. Ginseng root can help to defeat this disease.