As a subject matter expert in the field of pharmacology, I have a deep understanding of the effects of various substances on the human body. When we talk about a harmful drug, we're referring to substances that can cause significant damage to an individual's health, well-being, and potentially their life. The harmfulness of a drug is determined by several factors, including its addictiveness, the potential for physical harm, and the psychological impact it may have.

Addictiveness is a key factor in determining the harmfulness of a drug. Drugs that are highly addictive can lead to a strong physical and psychological dependence, making it difficult for users to quit. This can result in a cycle of abuse that can be very challenging to break.

The potential for physical harm is another critical aspect. Some drugs can cause severe damage to the body's organs, such as the liver, heart, and brain. Long-term use can lead to a range of health issues, including but not limited to, heart disease, liver failure, and neurological disorders.

Psychological impact is also significant. Certain drugs can alter a person's mental state, leading to issues like anxiety, depression, and even psychosis. The long-term psychological effects can be just as damaging as the physical ones.

In society, there's often a distinction made between "hard drugs" and "soft drugs". Hard drugs are typically considered more harmful due to their high addictiveness and the severe physical and psychological damage they can cause. These include substances like heroin, cocaine, and methamphetamine. On the other hand, soft drugs are seen as less harmful, but it's important to note that even these can have negative effects, especially with regular use.

It's also crucial to consider the context in which a drug is used. The same drug can have different effects depending on the dosage, the method of administration, and the user's individual health and genetic factors.

Moreover, the legal status of a drug does not always correlate with its harmfulness. Some substances that are illegal can have less harmful effects than certain prescription medications when used appropriately.

In conclusion, a harmful drug is one that poses a significant risk to an individual's health and well-being. It's a complex issue that involves understanding the substance's properties, the potential for abuse, and the broader societal implications.

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Drug harmfulness is the degree to which a psychoactive drug is harmful to a user and is measured in various ways, such as by addictiveness and the potential for physical harm. More harmful drugs are called "hard drugs" and less harmful drugs are called "soft drugs".read more >>