Have you ever thought about what skin does for us. Most of us are aware that skin protects us from liquid, heat, cold, dirt and bacteria. But that is not its only job. For instance, the skin is where our bodies make the vitamin D that we need. Another function has to do function with the sense of touch. Without that sense, we could not feel any difference between rough and smooth surfaces. Skin can even help us determine, if someone is sick. The wrong color----slightly grey or very pale -----maybe sign of decease. Skin may reflect a person's mental state, too. Unusual swelling, for example, maybe a sign that person is nervous or under stress.
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