These questions were answered by more than 50 individual scientists and science writers with expertise in addiction. To get as many answered as possible, responses were written quickly based on the personal background and knowledge of each expert. Please note that there was not a secondary review or proofreading of each fact, and if readers have questions or comments about any response, they can ask further questions here.

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How do steroids affect a person's mood?

-flipper623,

Very good question! It is possible that some steroid abusers may become addicted to the drugs, as evidenced by their continuing to take steroids in spite of physical problems, negative effects on social relations, or nervousness and irritability. Also, they spend large amounts of time and money obtaining the drugs and experience withdrawal symptoms such as mood swings, fatigue, restlessness, loss of appetite, insomnia, reduced sex drive, and the desire to take more steroids. The most dangerous of the withdrawal symptoms is depression, because it sometimes leads to suicide attempts. Untreated, some depressive symptoms associated with anabolic steroid withdrawal have been known to persist for a year or more after the abuser stops taking the drugs. If you want to learn more about steroid abuse, please go to: http://teens.drugabuse.gov/drug-facts/anabolic-steroids

-Ruben Baler

how do u know so much about drugs

-AsianInvasion,

In one word: Research. Twenty five years of it. You would be amazed about the amount of information we've been able to obtain through studyng the brain and the effects that different drugs can have on it.You can learn much more about what addiction research has taught us by visiting www.drugabuse.gov

-Ruben Baler

how do you get a license for medical marijuana?

-jspecialblend,

You don't. First, your teen. Second, I'm guessing your not sick or a doctor. Third, it's illegal...medical or not.

-Elisabeth Davis

how does alcohol affect your brain???

-jelissamitcell,

Alcohol acts as a stimulant and a depressant, depending on quantity, and whether the body is in the process of absorbing the alcohol, or whether it is in the process of metabolizing the alcohol and getting rid of it. Alcohol reduces inhibitions and behavior control, and can cause us to not perceive or respond to social interactions appropriately, and of course affects the brain's motor coordination centers. Finally, over time with frequent heavy use, alcohol increases the rate at which the brain shrinks with age.

-James Bjork

How does an overdose of drugs kill you?

-reddie22,

Different drugs can kill you in different ways. Opiates such as heroin or prescription pain killers can depress breathing, sometimes to the point of respiratory arrest. Cocaine can produce abnormal heartbeat, leading to cardiac arrest. Alcohol also can depress respiration to the point of respiratory arrest.And believe it or not, the nicotine in a cigarette can be toxic to babies and toddlers. It's considered a medical emergency when a baby eats a cigarette. For more on health consequences of drugs, click on http://www.drugabuse.gov/related-topics/medical-consequences-drug-abuse. Did you know that in 2007, one in ten high school seniors reported the non-medical use of the prescription pain reliever Vicodin?

-Frank Vocci

How do you know students are doing drugs if they dont tell you?

-th,

Well, if you mean how could someone tell if a person is using drugs....there can be many possible signs that a person is abusing them. These signs can vary depending on the drug and the individual. For example, stimulants would make a person unusually alert while marijuana may make them seem sluggish.

-Anna Staton

How does marinol affect the body? If it is prescribed, can you drive or are you considered to be under the influence

-saisd,

Marinol is the active ingredient in marijuana. A person taking Marinol should not drive, as they would be impaired.

-Frank Vocci

how does meth affect your body?

-Vikings,

Great question. Methamphetamine is a stimulant that has it main effects in the brain. The effects of meth on the brain can lead to memory loss, learning impairment, movement disorders, and addiction. Use of meth can lead to cardiac (heart) and neurological damage. Behaviorally, meth can lead to aggression, violence, and psychotic behavior. For more information, please visit: http://drugabuse.gov/ResearchReports/Methamph/Methamph.html.

-Joe Frascella

How does people get addicted to drugs?????

-nkelley,

People get addicted by using drugs repeatedly, which changes their brain in such a way that they now need the drug just as you need water when thirsty or food when hungry.

-Nora Volkow

how does self esteem affect your body?

-s.kimberly.kell,

If your self esteeem is very low this can be stressful which can make you anxious and more vulenrable to feeling depressed, and using drugs.

-Nora Volkow

How does smoking contribute to lo lung cancer?

-CrystalAlyssa,

The lung is lined with cells that normally die after a certain period of time. Smoking causes changes in the cells lining the lungs. The DNA of these cells is damaged. Some of these changes are irreversible, causing the cells to someimes become "immortal". The lung cells that don't die become cancer. See http://www.drugabuse.gov/consequences/cancer/ for more info.

-Frank Vocci

How does the young kids get started with drugs?

-HogueAndAzn,

Hi and thanks for your question - one of the big influences for kids starting drugs is being around kids who use drugs. The people you hang out with can really influence what you do - especially when you are a kid.

-Nicolette Borek

how does using drugs affect your acedemic life?

-caroline,

As a student, it's important that you get good grades, right? And you need your brain to work properly in order to study, learn, pay attention, right? So when you take drugs it makes it very hard to focus and stay motivated to do what you have to do. When you take drugs they become more important than anything else...so using drugs is really bad for your academic life, not to mention life in general.

-Elisabeth Davis

How expensive can drugs get?

-rhhsjbmg,

Drugs don't seem too expensive at first but people end up using more and more. It can take your all your time and effort to pay for a drug habit.

-Wilson Compton

How does cocaine affect the body?

-flipper623,

I appreciate your interest - cocaine is a stimulant that has most of its effects on the brain, as do all drugs of abuse. Cocaine leads to an increase in the brain chemical, dopamine, in the brain synapses, and continued use can change the way your brain works. As for effects on the body, cocaine can increase your blood pressure, increase your heart rate, and can lead to strokes and heart attacks. It definitely "pushes" your cardiovascular system. Thanks again for the question.

-Joe Frascella

How does Cocaine effect teenagers?

-RockerGirl 101,

Cocaine is a stimulant that can make a person paranoid especially with repeated use, and it can produce addiction

-Nora Volkow

How does consuming drugs during pregnancy affect the fetus?

-flipper623,

Thanks for writing in. Drugs can harm the developing fetus in many different ways. We have research that looks at prenatal exposure to marijuana, methamphetamine, cocaine, heroin, tobacco, alcohol and other drugs, and the research shows that drugs cause all kinds of problems with growth (low birth weight), paying attention, thinking, language, and behavior. How exactly the fetus is affected depends on the drug. For example, alcohol use during pregnancy can cause fetal alcohol syndrome or fetal alcohol spectrum disorder, a very serious condition (see this website for lots of detail on FAS: http://pubs.niaaa.nih.gov/publications/aa50.htm ) And tobacco use during pregnancy has been linked to behavior problems in kids. We recommend moms not use alcohol and drugs, including tobacco, during pregnancy and talk with their doctors if they do to make sure they and their babies are healthy!

-Nicolette Borek

how does drugs affect your mind

-esg,

Good question. All drugs affect the brain, and therefore can affect the way you think and feel. One part of the brain affected by drugs is the "reward system" where a brain chemical called dopamine is released. Sudden surges of dopamine in the brain is what causes the feelings of rush and high that can then lead individuals to continued use, abuse, and then addiction. But if you continue to use the drugs, the amount of dopamine in the brain decreases so you end up feeling bad from using the drugs. You list different classes of drugs, and the specifics of each can be found at: www.teens.drugabuse.govThanks for this question.

-Joe Frascella

How does drugs Effect your brain more than any other place on the Body?

-RockerGirl 101,

All drugs of abuse affect the brain reward areas and some drugs affect other brain areas as well. The web site below gives more information on how drugs affect the body. http://drugabuse.gov/scienceofaddiction/

-Joe Frascella

how long does it take for date rape drugs to take effect?

-Mini101,

Date rape is unwanted sexual contact from someone you know, may have just met, and/or thought you could trust. A number of drugs have been used in date rape because they can be slipped into someone's drink and have no taste or smell; these include ketamine, rohypnol and gamma hydroxybutyrate (GHB). These drugs can sedate a person and make them forget what happens to them. Rohypnol and GHB are predominantly central nervous system depressants and can be very dangerous, even fatal, because of their effects on the respiratory system.To learn more about the side effects and medical consequences of these drugs, visit: http://www.drugabuse.gov/infofacts/RohypnolGHB.html. If you have experienced any sexual assault report the attack by calling 911. You can also call 1-800-656-4673 to speak with a counselor at any time. More information can be found at http://www.womenshealth.gov/publications/our-publications/fact-sheet/date-rape-drugs.html. If you have experienced any sexual assault report the attack by calling 911. You can also call 1-800-656-4673 to speak with a counselor at any time. More information can be found at http://www.womenshealth.gov/publications/our-publications/fact-sheet/date-rape-drugs.html.

-Jan Lipkin

How long does it take for the effects of chewing tobacco to take affect?

-rashid yhs,

It's fairly rapid, in a minute or two. Chewing tobacco can cause gum disease and has been linked o pancreatic cancer. See http://teens.drugabuse.gov/drug-facts/tobacco for more.

-Frank Vocci

How long does it take to get addicted to a drug?

-Vikings,

Good question. Some people report that they were hooked after their first drink, first hit of crack cocaine, first cigarette, or first hit of heroin. Medical professionals use certain criteria to make a diagnosis of drug dependence, For one thing, the pattern of use must be persistent and last over a certain period of time, about a year. See our illustrated and easy-to-read booklet for more info: http://drugabuse.gov/scienceofaddiction/, please go to: National Institute on Drug Abuse (NIDA)301-443-1124http://www.drugabuse.gov/ By clicking on the link Students and Young Adults from NIDAs home page you will be able to access resources tailored for students and young adults , whether you are in middle school and doing research on the effects of marijuana use, or high school student looking to find out about drug use and HIV.If you need help, you will also find a link there to the Substance Abuse & Mental Health Services Administration (SAMHSA) at http://www.findtreatment.samhsa.gov/ or 1-800-662-HELP, where you can find private and confidential help 24/7.You will also find facts, trends, statistics, graphics and reports on specific drugs on NIDAs Web sites: http://www.smoking.drugabuse.gov/http://www.marijuana-info.org/http://www.clubdrugs.gov/http://www.steroidabuse.gov/http://www.inhalants.drugabuse.gov/

-science of addiction and treatment

How long does it take to get bad/ black lungs?

-RCMS Health,

Not long. There are particles in cigarette smoke that stay in the lungs and accumulate there. Army recruits who smoke have poorer lung function than non-smokers, probably due to inflammation of he airways. Quitting smoking causes a reversal of the inflammation and lung function improves in just weeks. For more on nicotine visit this link at our teen website: http://teens.drugabuse.gov/drug-facts/tobacco

-Frank Vocci

how long does it take to make you addicted to a drug?

-s.lottie.wise,

Depends on the drug, your genes and your age. The younger you start the less time it takes. Some drugs like metamphetamine produce addiction faster than others. It also depends on the doses used and routes of administration. Forr example when a person smokes or injects cocaine, they are more likely to become addicted than if they snort it.

-Nora Volkow

how long do drugs in general stay in your system?and can they have long term affects if if used once?

-ham223,

Hi! How long a particular drug stays in your system depends on the drug itself. Drugs of abuse are excreted from the body over time. Use of drugs can definitely lead to long-term changes in the brain and body and can lead to addiction and other adverse consequences and problems. For more information on the long-term effects of drugs, clilck on www.teens.drugabuse.gov

-David Shurtleff

how long do you have to use a drug to become addicted?

-mslice,

Hi, that's a great question! It depends on the drug, on how you take it (smoked, orally, intravenously), how much of it you take, and it also depends on you. Some people are more vulnerable than others. If you have a family history of drug problems--that's a big red flag, but even if you don't you may have other risk factors that make you vulnerable. There is a lot we still dont know about who becomes addicted and why, and after how much drug exposure. We do know that each person is different, so its a little like playing Russian Roulette if you choose to use drugs. The teen brain is a work in progress, undergoing dramatic changes during adolescence and into adulthood. We also know that the younger a person begins to use drugs, the more likely he or she will progress to more serious drug abuse, and that risk of drug abuse increases during times of transition, such as changing schools, moving, or divorce. But, if you do, the earlier you stop, the more likely you will be to avoid addiction and the harmful brain changes that lead to it. For more information go to http://teens.drugabuse.gov/drug-facts/brain-and-addiction.

-Marsha Lopez

How long do you stay drunk when you drink

-x12Tyler12x,

In a heathy, non-alcoholic person, the body clears away the equivalent of about one drink an hour. Also, the body and brain get "acute tolerance" to the alcohol within a single drinking session, where it adapts to the chemical assault to maintain its normal function as best it can, and this reduces the effective duration of drunkenness. In other words, if your breathylizer reads .06 while you're consuming drinks and getting more intoxicated, you will likely not feel as drunk when your BAC is .06 on the way back down.

-James Bjork

how long do you think it will take for somebody who is extremely addicted to drugs to become drugfree?

-yhsesther,

Depends on the drug and how long they have taken them The longer a person has taken the drug in general the longer it will take them to be drug free. However another factor that affects the process is the support system that the person has. For those with strong support from family and friends the process may be faster.

-Nora Volkow

How long does any drug take for you to die?

-eeyore27,

Good question. Deepending on the drug, an individual can die from a single use. For example sniffing chemicals in solvents or aerosol sprays can induce irregular and rapid heart rhythms and lead to heart failure and death within minutes of sniffing. This syndrome, known as "sudden sniffing death," can result from a single session of inhalant use by an otherwise healthy young person. For more information on inhalants, click on: www.inhalants.drugabuse.gov

-David Shurtleff

i am an strait a AP student, and ive tried marijuana and will i get adicted to it and become dumber

-MajicPurpleJUJU,

Congratulations on your fine academic achievements, though maybe you should work a little on your spelling.Nobody can say whether a particular person will get addicted to marijuana. Some people do, though, and we we know that the younger a person begins to use drugs, the more likely he or she is to progress to more serious drug abuse. Teenagers' brains are still developing--their brain cells are still forming new connections. That helps teenagers cope with all the new experiences of this rich time of their lives, but one consequence is that they are more vulnerable to becoming addicted to drugs. Of course, the best insurance against becoming addicted, for someone who is already using marijuana, is to stop..Don't know about "dumber", but we do know that marijuana interferes with concentration, learning, and memory. A person's ability to study, take in new information, and remember facts and events may return to normal when he or she stops using marijuana. All the things that he or she didn't learn and didn't store in memory while using the drug won't come back, though.For lots more on marijuana, see http://drugabuse.gov/ResearchReports/Marijuana/default.html.

-Eve Reider