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How long does Marijuana stay in the body?

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Psychiatrist
Practicing since : 2003
Answered : 2190 Questions
Question
Thank you. How long does it take for any trace of marijuana to be found in your system is you have been smoking every day for 25 years and are now 45 years old? Person is 6 feet tall, 190 lbs. Don't know how much he smokes each day but has worked steady for 25 years.
Posted Wed, 13 Aug 2014 in Drug Abuse
 
 
Answered by Dr. Jonas Sundarakumar 23 minutes later
Brief Answer:
Around 30 days

Detailed Answer:
Hello and welcome to Healthcare Magic. Thanks for your query.

The clearance times for marijuana varies widely depending on the frequency and quantity of use. I have given below the approximate clearance times according to the degree of use.

Moderate Use (4 times per week)      5 days
Heavy Use (daily)       10 days
Chronic Heavy Use       30 days

So, according to your description, it would take around 30 days for the drug to be cleared from the system.

Wish you all the best.

Regards,
Dr. Jonas Sundarakumar MBBS., DPM., MRCPsych.(U.K.)
Consultant Psychiatrist
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