A person in my circle consumes cannabis approximately once a week. What are the consequences associated with this behavior?

Using cannabis, whether through smoking or other methods like oils, can have various consequences depending on how it is consumed. Smoking cannabis can have negative effects on the lungs in the long term, similar to smoking cigarettes. However, using cannabis oils may not have the same impact on the lungs. The effects of oils may also take longer to kick in compared to smoking, but they can last for a longer period of time.