Page 91 - Stories for Thinking Children 1

complex immune system
does its duty perfectly."

"So, Sir, why do we get
sick? Is it because our im-
mune system has not done
its duty?"

"No, in a normal per-
son, the immune system is

always working. Without
our knowing it, our immune system is engaged in a big war against
germs. First of all, it tries to prevent germs from entering and re-
maining in our bodies. If germs do manage to enter our bodies it
destroys them immediately."

"Why do we get sick, then?" they still wanted to know.

"If we stay out in the cold too long," he explained, "And if we
are careless about eating our meals, our bodies lose strength.

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