My son is four years old and his resistance is not very good. It's so hot that he will catch a cold by blowing the fan at night. Is there a lack of nutrition?

1. Strengthen exercise and take appropriate outdoor activities. Many parents let their children stay at home every day for fear of the wind, rain and flu outside.

2. Keep warm to prevent fan and air conditioning syndrome (living conditions have improved, and many people have been "blown" sick in recent years).

3. Pay attention to diet and nutrition, and eat reasonably (nowadays, children don't lack any nutrition, and eat more vegetables, fruits and coarse grains).

4. When necessary, preventive infusion of gamma globulin can enhance the resistance, which is generally used when the weather turns cold in winter and lasts for 3-6 months. But I personally don't recommend it. Nowadays, children exercise less and have weak resistance. Strengthen nursing and nutrition, and you will get better in your teens.

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