A comparison of mainstream and sidestream marijuana and tobacco cigarette smoke produced under two machine smoking conditions. Chem Res Toxicol. Fractionation and capillary gas chromatographic—mass spectrometric characterization of the neutral components in marijuana and tobacco smoke condensates.
J Chromatogr A. On the Carcinogenicity of Marijuana Smoke. In: Runeckles VC, ed. Recent Advances in Phytochemistry. Springer US; Pulmonary hazards of smoking marijuana as compared with tobacco.
Pulmonary effects of marijuana inhalation. Expert Rev Respir Med. Health care use by frequent marijuana smokers who do not smoke tobacco. West J Med. This November your donation goes even further to improve lung health and defeat lung cancer. Double Your Gift. Your tax-deductible donation funds lung disease and lung cancer research, new treatments, lung health education, and more.
Join over , people who receive the latest news about lung health, including COVID, research, air quality, inspiring stories and resources. Thank you! Drug Topics. More Drug Topics. Quick Links. About NIDA. Research Report. Marijuana can show up on a drug test for several weeks after it was last used. So people who use marijuana may find they don't get a job they want.
Some companies do routine drug tests on employees, so people who use marijuana can lose their jobs. The U. There's still a lot of discussion about the medical use of marijuana, though. THC and other cannabinoid pills are only available in some states and require a doctor's prescription.
At the moment, there's not enough research to say for sure if smoking marijuana is any more helpful than taking THC or other cannabinoids as a pill. Scientists are still studying this. People who use marijuana for a while can have withdrawal symptoms when they try to give it up. They may feel irritable, anxious, or depressed; have trouble sleeping; or not feel like eating. Marijuana withdrawal can be a bit like caffeine withdrawal: It's usually worse a day or two after someone stops using marijuana.
After that, withdrawal symptoms gradually decrease. They're usually gone a week or two after the person no longer uses the drug. Marijuana can be addictive. About 1 in 10 people who use the drug regularly can develop a "marijuana use disorder.
This is much more likely to happen in people who start using marijuana before age If regular users stop taking cannabis, they may get withdrawal symptoms, such as feeling moody and irritable, feeling sick, difficulty sleeping, difficulty eating, sweating, shaking and diarrhoea. Regularly smoking cannabis with tobacco also increases the risk of becoming addicted to nicotine and experiencing withdrawal symptoms from nicotine as well as cannabis if you cut down or give up.
Regularly using tobacco also increases the risk of tobacco-related diseases such as cancer and coronary heart disease. See tips for stopping smoking. Read more information about cannabis on the Frank website. Regular cannabis use increases the risk of developing a psychotic illness, such as schizophrenia. A psychotic illness is one where you have hallucinations seeing things that are not really there and delusions believing things that are not really true.
Cannabis also increases the risk of a relapse in people who already have schizophrenia, and it can make psychotic symptoms worse. If you drive while under the influence of cannabis, you're more likely to be involved in an accident. This is one reason why drug driving, like drink driving, is illegal. Cannabis use may affect fertility.
Regular or heavy cannabis use has been linked to changes in the female menstrual cycle and lower sperm count, or lower sperm quality in men.
Using cannabis while pregnant may harm the unborn baby.
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