Cannabis is not a safe alternative to tobacco. Cannabis and tobacco smoke have many of the same chemicals. These chemicals can be harmful and may cause breathing problems. They have also been linked to cancer.
People who smoke cannabis may inhale more deeply than tobacco smokers or hold the smoke in their lungs for longer periods of time. This means they may have more exposure to these harmful chemicals.
Like tobacco, people can be affected by second-hand cannabis smoke. If someone is in a small space and breathes the smoke, they may become mildly impaired from it. In fact, a person that does not use cannabis may even test positive in a urine drug test just from having breathed in second-hand cannabis smoke.
To learn more about the impact of cannabis smoke on the body, click here.