4 doctors weighed in:

How long does it take for marijuana tobleave the body how long doesbit take for the THC to leave the body of a teen after a year of hardcore smoking

4 doctors weighed in
Dr. Alan Wartenberg
Addiction Medicine
2 doctors agree

In brief: Many weeks

Depends on how much body fat you have.
In the average person, daily smoking for a year or more will cause a large amount of thc metabolites to accumulate in fat cells, and you may test positive for many weeks, and even a few months is not unheard of. This is not thc, and is not the active drug, and does not keep you high - it is a metabolite that is detected in urine and blood.

In brief: Many weeks

Depends on how much body fat you have.
In the average person, daily smoking for a year or more will cause a large amount of thc metabolites to accumulate in fat cells, and you may test positive for many weeks, and even a few months is not unheard of. This is not thc, and is not the active drug, and does not keep you high - it is a metabolite that is detected in urine and blood.
Dr. Alan Wartenberg
Dr. Alan Wartenberg
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Dr. Laura McMullen
Pediatrics
1 doctor agrees

In brief: The

The effects of marijuana use usually occur pretty quickly after smoking it and then start to decline after 3 hours of the last use.
Most studies that measure how long thc is detectable in the urine look at occasional use. A positive urine test usually reflects occasional marijuana use within the last 1-3 days. However, with chronic use, some of the thc is stored in fat cells causing a slower release and much longer detection times - up to 5 or 6 weeks.

In brief: The

The effects of marijuana use usually occur pretty quickly after smoking it and then start to decline after 3 hours of the last use.
Most studies that measure how long thc is detectable in the urine look at occasional use. A positive urine test usually reflects occasional marijuana use within the last 1-3 days. However, with chronic use, some of the thc is stored in fat cells causing a slower release and much longer detection times - up to 5 or 6 weeks.
Dr. Laura McMullen
Dr. Laura McMullen
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