Recurrent cold causes

1, lack of exercise
Children very rarely participate in outdoor activities, while the lack of necessary training, children are often relatively poor physical condition.

2, lack of nutrition
Calcium deficiency in children are easy flu, because these children lack the body protein, so the formation of antibodies is also less. Calcium deficiency in children is often a lack of vitamin D, lack of vitamin D would affect the respiratory function of a child's development.
In addition, the lack of trace elements such as iron, zinc and so on will affect the child's resistance force.
3, air pollution
If people smoking at home, children are often the greatest danger collected.
4, oral disease
Children with chronic oral lesions, such as chronic rhinitis, sinusitis, dental caries and so on.
5, temperature
When the turn of the season, when hot or cold will cause the child very suited.
6, contact infection
General, easily a child suffering from a cold should avoid crowded public places to go, because, where the personnel situation is complicated, easily cross-infection occurred, believe the children would easily be infected.
View of this, to prevent recurrent respiratory tract infections in children, parents need to do is not to buy the children to enhance resistance to drugs, more importantly, doing care work and change some bad habits.