[opo]

>...And you don't need Vitamin K supplements. Greens are extraordinarily high in Vitamin K. Even, just 20 calories of Spinach will provide over 400% of your daily Vitamin K intake!

I agree with you that most people don't eat enough fruits and vegetables. Though if someone is worried about a particular nutrient, it isn't that simple. It doesn't matter how much Vitamin K is in spinach if you don't absorb it:

>...Circulating phylloquinone levels after spinach with and without butter were substantially lower (7.5- and 24.3-fold respectively) than those after taking the pharmaceutical concentrate. Moreover, the absorption of phylloquinone from the vegetables was 1.5 times slower than from Konakion.

https://www.ncbi.nlm.nih.gov/pubmed/8813897