Cannabis has components that possess antiinflammatory properties. It’s not merely a painkiller.
When pot is marketed as medical it purports to have more of the antiinflammatory/antianxiety/anticancer/antispasmodic/antiseizure properties than regular pot, which puts emphasis on a high THC content.
Regarding turmeric:
My doc says the active ingredient is not very bioavailable to our bodies, so if I was gonna take I should take big heaps.
I ingest a heaping teaspoon mixed into water/almond milk to make a paste. Tastes like dirt!
If you go this route, buy it at the Indian market. It costs about 25% what those foolhardy white people pay per ounce at the white people supermarket.