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Drugs & Health Blog

Real Teens Ask: Can Your Brain Size Change From Drug Use?

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Sara Bellum

At NIDA's last Drug Facts Chat Day, mendythepenty asked this question:

"is it possible that you do so much drugs, that your brain can change into the size of a pea?"

When you do drugs, your brain changes. According to NIDA scientists, the brain weighs about three pounds and doing drugs, even for the first time, can change how our brain looks and works.

Assuming you're serious, does this literally mean it can shrink to the size of a pea? Probably not, but the fact that drugs can change your brain, never mind damage or kill brain cells, is enough for me! I want to be smart. To me, smart means cool, and it means healthy. And healthy means being able to live the life you choose, whether that's trying out for the basketball team, skateboarding with friends, or going to the school dance.

Discover more about how drugs affect the brain. And pass it on! You can read more real questions from kids in our NIDA Drug Facts Chat Day transcripts.

Comments posted to the Drugs & Health Blog are from the general public and may contain inaccurate information. They do not represent the views of NIDA or any other federal government entity.


Hello my name is kayla
your games are really cool
the only game that i hate is
that pick a card

yeh right.. great post, Thank You

Poetically just posting this criticism to show that I drop in on your blog daily.

Drugs are quality in my opinion im 17, I've smoked weed since the age of 11 ive also done cocain, mcat, MDMA, ecstacy tabs n many more of course they dont help your brain but its up to you to do them responsibly and to remember whats important in life like working hard to make sure you have a good life but if your at the point where you cannot live without drugs then ya should get yourself to rehab aha
Good job for changing your life around. I've never done it but I've seen how it does hurt my relatives. Stay put and stay strong.

Our Teach program in newport beach ca. allow young people to start college in a safe community -

haha, get it? "simon says:"? but seriously. drugs are no laughing matter... unless you make a pun on this blog and it IS funny. only then is it funny.

Right the sports really what takes them out of drugs whether they are depress or what there is no good in drugs not even pleasure it is something that will only destroy you, nothing more and less!

Great advice to stay away from drugs so you can skateboard with friends!
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How do you define drugs? those wich affect your brain? did you know that your blood sugar levels and other what comes from normal food, like tomatos having their own nicotine, they all changes your brain activity to some differend direction, so if that food gives you pleasure, so what? don't u think if we say drugs are bad, and same time they make ur living in euphoric like some people like to thinkin there's a god helping them and watching them everytime, now we can ask, wich one of those sounds more delusion, this is only example of stupidy of humans but lets go for it. 1. theres a somekinda creature upon us to make our living organism and watching us grow. or 2. there's a few differend species wich give u a good feeling, and nobody can't say they don't if they do, they ain't liking it, and not get so called "addicted" from it. So, we have a religion against some plants illegal coz of their high, example for delusions, lets look back in history and count, how many dead people religion cost while fighting other religions, and lets look history of people wich died on illegal drugs, we all can see the truth and delusion on this, we fight wars on drugs, we make drugs for doctors to sell for big profit, and after all medicine got from doctor kills every damns year some near 100,000 people, take ur eyes and use them, take ur brain and stimulate them, don't let anyone write propaganda in yours brains memory, don't let information flow in without chewing it, and at last, don't take one side of things for your own side when u talk to your children, because if your wrong with your side, your children do not trust you any more, because your ability to discern. Like me I live in Finland where drugs became illegal coz of americas drug law, and polices these days chase people who smoke some cannabis, and now if we look americas druglaw, many places are changing their druglaw on cannabis there, so if this is something, I bet it's called irony.