I use to smoke marjiun before but I quit

Hi thanks for writing to Practo consult. The studies of marijuana on fetus are not 100% proven.  Although the influence of marijuana on human brain development is not entirely clear, studies have shown links between prenatal marijuana exposure and impaired functions such as impulse control, visual memory, and attention during school years. An ongoing study also found an association between prenatal marijuana exposure and restricted fetal growth during pregnancy. Some studies  indicate that infants who were exposed to marijuana are more likely to be anemic, have lower birth weight, and be placed in neonatal intensive care than infants of mothers who did not use marijuana. How long it stays in body , we have no exact idea. But one time user it may leave body by 24 hours . but studies have shown that its detected i n hair follicle for about as long as 90 days after consumption. It also depends upon whether you r chronic user .