2009年02月04日

赤ん坊は知っている「汚いものは体にいいんだよ」


Babies Know: A Little Dirt Is Good for You
( New York Times )

Ask mothers why babies are constantly picking things up from the floor or ground and putting them in their mouths, and chances are they’ll say that it’s instinctive -− that that’s how babies explore the world. But why the mouth, when sight, hearing, touch and even scent are far better at identifying things?

When my young sons were exploring the streets of Brooklyn, I
couldn’t help but wonder how good crushed rock or dried dog
droppings could taste when delicious mashed potatoes were routinely rejected.

Since all instinctive behaviors have an evolutionary advantage or they would not have been retained for millions of years, chances are that this one too has helped us survive as a species. And, indeed, accumulating evidence strongly suggests that eating dirt is good for you.


【 まずは準備運動 】

・instinctive 本能(instinct)的な
・explore 探検する
・identify 同定する、身元を確認する
・droppings 動物のふん
・evolutionary 進化(evolution)の
・retain 保持する
・accumulate 積む、ためる


● 解説ザブ〜ン!
posted by K.Andoh | Comment(2) | TrackBack(0) | 科学


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