Health

It's good for bronchial/vasodilation, and although not a cure for glaucoma, it can temporarily lower the pressure in the eyeball.

It's can be great for nausea (though for certain people it can cause nausea) and appetite for people having chemotherapy or conditions who would benefit from eating when they're not prone to be hungry.

My neighbor dealt with fibromyalgia all her life and tried everything including every variation of CBD - turns out full on cannabis/THC was the actual miracle for her - it potentially might provide some relief on systemic pain syndromes. Cannabis doesn't work for pain caused by general injury, but it can cause muscle relaxation and potentially make pain more tolerable due to its chill-out effects.

(I had the same reaction to Vicodin - an actual painkiller. I still had the pain, but it took the "sharp point" of it away and made me not obsess about the pain. Unfortunately opiates have that "everything is groovy and awesome" effect only for like 10-15 minutes - that and the lack of plateau for pain relief tends to be what hooks people on it.)

Some people I've known say Cannabis is the only remedy for a migraine headache that works - likely due to vasodilation and muscle relaxation.

Sativa strains are good for social anxiety, depression, motivation (some weed will make you want to get things done - like I've decided to paint the bathroom right now!); indica strains for hyper-anxiety and insomnia - especially if caused by "racing intrusive thoughts" or lack of sleep due to general pain or discomfort. Sativa usually is inspirational; indica is calming.