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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

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There are more bacteria in your mouth than there are people in the world.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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