Drugs.

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Presentation transcript:

Drugs

What is a drug? A drug is any substance that changes the structure or function of the body. Many different chemicals can function as drugs.

Two major classes of drugs: Drugs that act on the nervous system fall in two categories: Stimulants Depressants

Stimulants: Stimulants increase many functions controlled by the nervous system. Increased heart rate Increased blood pressure Increased breathing rate Increased release of excitatory neurotransmitters

Examples of Stimulants: Caffeine Nicotine ADHD medications Amphetamines (Meth) Cocaine Ecstasy

Problems with Stimulants Provide a temporary feeling of energy and well-being. User feels extreme fatigue and depression when the drug wears off. Nicotine is very addictive and is especially hard to quit because it is so easily available.

Problems with Stimulants Meth and Cocaine/Crack are very addictive because they cause permanent changes to dopamine receptors. Ecstasy causes changes in the serotonin receptors and can lead to fatal body temperature increases.

Depressants: Depressants decrease the rate of many functions controlled by the nervous system. Decrease heart rate Decrease blood pressure Decrease breathing rate Increase the release of inhibitory neurotransmitters: GABA

Examples of Depressants Alcohol Many common prescription drugs including Anti-depressant drugs Anti-allergies drugs. Opiates including morphine

Problems with depressants Some people become addicted to alcohol. Using ANY alcohol during pregnancy can cause permanent damage to the infant. Opiates can be very addicting. Using multiple depressant medications can cause breathing and heart function to stop.

For your safety: Do not take illegal drugs. Always tell a doctor about all drugs you have taken. This includes any illegal drugs. Do not take medication prescribed for someone else.