NIDA for Teens: The Science Behind Drug Abuse
Drugs & Health Blog

Ask the Experts: Today Is Drug Facts Chat Day

Sara Bellum







Does marijuana kill brain cells?

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What Are the long-Term Effects of Marijuana Use?
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@Productos Quimicos Great question - Long term effects may include:
· Addiction
· Poorer educational outcomes and job performance, diminished life satisfaction
· Respiratory problems—chronic cough, bronchitis
· Risk of psychosis in vulnerable individuals
· Cognitive impairment persisting beyond the time of intoxication
Check out this brochure on the NIDA for teens website:




can weed kill you

It depends on how your using it



How long does two puffs stay in your system




I ate half a brownie 25 days ago. Do you think it's out of my system already?

Hi Anonymous,  We can't answer that for you.  Everyone is different.  If you're concerned about passing a drug test, it's best to just avoid marijuana altogether.

So my best friend used meth for 18 years and a year and a half ago quick cold turkey and has been clean since, but lately I've noticed her having "tweaker jaw" I'm wondering if this could be a symptom of using again

Addiction is a very powerful disease, and it is not uncommon for someone to relapse even after being off drugs for a long time. And meth is a drug that ravages the brain and the body, and someone who has used it heavily can have symptoms of use long after they’ve quit. It’s not impossible that your friend is just going through physical symptoms without using drugs. And it’s also possible that she is using. As her best friend for 18 years, you know what she looks and acts like when she is using meth. If you are getting worried, treatment is the best way for her to safely get off the drugs and get the tools to stay off of them. Check out this link for resources on getting help:

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