Yes, Yes and Yes....I can't say it enough. Drugs definetly affect the nervous system. Depending on the type of drug a person is using they will see different results. Not only will it affect the person under the influence but, if they are pregnant it could cause problems to the infant when they are born.
Alot of the "feel good drugs" like coke, crystal, ecstasy deplete the body of dopamine which is a natural chemical we have in our brain. Users of those drugs will feel emotional, depressed and possibly suicidal once the drug leaves their system.
Although most people don't consider alcohol a drug technically it is. Alcohol when abused can be very detrimental to the body and brain over time internal organs will start to show damage. While under the influence of alchol the central nervous system becomes depressed.
Nicotine acts as a stimulant to the central nervous system. The nicotine causes dopamine to be released. Nicotine mimics acetylcholine and increases skeletal muscle activity, heart rate and blood pressure. Long term use of nicotine can cause various types of cancer.
Cocaine/methamphetamine's are also a stimulant to the central nervous system.
Marijuana causes the central nervous system to have a feeling of euphoria, along with altering vision and judgement. Long term use can cause hallucinations, depression, anxiety and paranoia.
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