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.

Dr Fowler and 3 doctors agreed

Answered 5/21/2015

2.9k views

Thank

Dr. Michael Gabor answered

Specializes in Diagnostic Radiology

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

Dr Singer and another doctor agreed

Answered 5/15/2015

2.9k views

Thank

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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

Dr Fowler and 3 doctors agreed

Dr. Michael Gabor answered

Dr Singer and another doctor agreed

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