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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
![(a) Savanna baboons live in female-philopatric groups, among which males migrate. (b) Chimpanzees li](https://biology-forums.com/gallery/47/medium_269691_26_01_15_5_55_23_20433921.jpeg)
![In addition to common schools, thousands of female seminaries were built between 1820 and 1850, many](https://biology-forums.com/gallery/47/medium_375348_18_08_15_9_36_30_223031090.jpeg)