Re: cannabis/skunk/weed
There are indeed medicinal uses for cannabis although that is in hot dispute, at least in USA. Its a drug and has certain effects on a person. Halaal or Haraam I dont know about.
It increases appetite, it greatly eases nausea and is helpful to cancer patients for these reasons. Its useful also, for anorexia. There;s actually a prescription medicine called Marinol which increases appetite that we may try using for my eldest son who has troubles in this area.
It is also a hallucinogenic and causes fatigue. Many users beleive that using it increases their creativity.
There are lots of people who use it "recreationally" here in USA (esp in california lol!).
These things aside, its illegal to have it and to use it. It takes months to leave your system so when you're offered a job and are sent for drug testing, you;d have to be "clean" of it for 2 to 3 months.
Most say that it is not addictive. It does cause tar buildup on the lungs when smoked just like cigarrettes do.
These are the things I can tell you about it. The rest is up to you to decide for yourself as to whether its worth it to try to "adjust" your loved one!