Respiratory system Someone who smokes marijuana regularly may have many of the same respiratory problems that tobacco smokers have. Continuing marijuana smoking can lead to abnormal function of the lungs and airways. Scientists have found signs of lung tissue injured or destroyed by marijuana smoke. Doctors advise pregnant women not to use any drugs because they might harm the growing fetus. Some scientific studies have found that babies born to marijuana users were shorter, weighed less, and had smaller head sizes than those born to mothers who did not use the drug.
Smaller babies are more likely to develop health problems.
Other scientists have found effects of marijuana that resemble the features of fetal alcohol syndrome. There are also research findings that show nervous system problems in children of mothers who smoked marijuana. Researchers are not certain whether a newborn baby's health problems, if they are caused by marijuana, will continue as the child grows. This is a matter for concern, since the THC in the mother's milk is much more concentrated than that in the mother's blood. Inc. Other trademarks property of their respective holders.