The word drug means anything that, even in small amounts, produces changes in the body, the mind, or both. This definition, however, does not clearly separate drugs from what we usually think of as food. The difference between a drug and a poison is also unclear. All drugs become poisons in large amounts, and many poisons are useful drugs in carefully controlled amounts. Is alcohol, for instance, a food, a drug, or a poison? It can be any of the three, depending on how we use it. 6. 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 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 gray or very pale, may be a sign of disease.
The word drug means anything that, even in small amounts, produces changes in the body, the mind, or both. This definition, however, does not clearly separate drugs from what we usually think of as food. The difference between a drug and a poison is also unclear.
All drugs become poisons in large amounts, and many poisons are useful drugs in carefully controlled amounts. Is alcohol, for instance, a food, a drug, or a poison? It can be any of the three, depending on how we use it. 6. 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 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 gray or very pale, may be a sign of disease.