Spinach has a plenty of folic acid, lutein, vitamin k and other minerals. It also has oxalic acid which prevents the body from absorbing calcium. Any calcium from other sources in your stomach at the same time as RAW spinach will not be absorbed. I am trying to get my calcium from raw kale and cooked spinach instead. Cooking spinach breaks down the oxalic acid.
The reason I am making this nosy point is that I have read about ton of female bloggers trying to drink a green smoothie everyday. So if you are drinking these smoothies, just know about the acid. Okay. Nose out.