Soldato
Well, Matcha green tea has lots of healing properties. Its crazily popular in Japan. A quick google on matcha tea will show lots of websites listing the seemingly endless benefits to it. I used to work with someone who drank it reguarly and she claimed it helped her a lot with her arthritis. Whether or not it actually helps or its just a placebo effect remains to be decided...however, I know my wife loves the stuff and it's expensive so she doesn't buy it often. So picked her this up so she can keep a sachet at work as well
I read the question as more like dust/powder vs loose leaf. They normally use dust/powder for normal tea bags in standard black tea, it's lower grade than the more expensive loose leaf tea.