A member asked:

I smoked marijuana once in my entire life. i'm 19 now. will i have brain damage or develop schizophrenia/other mental disorders?? no family history.

6 doctors weighed in across 2 answers
Dr. Robert Grindstaff answered

Specializes in Addiction Medicine

No: using marijuana only once will not cause lasting problems. The chronic use does lead to decreased IQ by about 10%, may potentiate some mental health issues, addiction issues and in male can decrease testosterone levels.

Answered 5/21/2015

2.9k views

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Dr. Michael Gabor answered

Specializes in Diagnostic Radiology

No,: smoking marijuana once won't have those effects.

Answered 5/15/2015

2.9k views

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