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These things are produced within the body in amounts that do not significantly harm a person. Oxytocin is produced during many other activities, such as cuddling, shooting guns, listening to music, laughing, etc. Unless you're willing to consider
every chemical the human body produces as a drug, this doesn't make sense.
Because cocaine causes an immense amount of damage to the human body whereas sex typically does not. Here's some of the effects cocaine has on human beings:
Short-term effects
- Loss of appetite
- Increased heart rate, blood pressure, body temperature
- Contracted blood vessels
- Increased rate of breathing
- Dilated pupils
- Disturbed sleep patterns
- Nausea
- Hyperstimulation
- Bizarre, erratic, sometimes violent behavior
- Hallucinations, hyperexcitability, irritability
- Tactile hallucination that creates the illusion of bugs burrowing under the skin
- Intense euphoria
- Anxiety and paranoia
- Depression
- Intense drug craving
- Panic and psychosis
- Convulsions, seizures and sudden death from high doses (even one time)
Long-term effects
- Permanent damage to blood vessels of heart and brain
- High blood pressure, leading to heart attacks, strokes, and death
- Liver, kidney and lung damage
- Destruction of tissues in nose if sniffed
- Respiratory failure if smoked
- Infectious diseases and abscesses if injected
- Malnutrition, weight loss
- Severe tooth decay
- Auditory and tactile hallucinations
- Sexual problems, reproductive damage and infertility (for both men and women)
- Disorientation, apathy, confused exhaustion
- Irritability and mood disturbances
- Increased frequency of risky behavior
- Delirium or psychosis
- Severe depression
- Tolerance and addiction (even after just one use)