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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
There are 20 feet of blood vessels in each square inch of human skin.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.
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.