I personally believe that healthful eating and such truly is the way to go. Vitamins are good dont get me wrong. But two glasses of almond milk offer up 90% of what should be your daily intake - of vitamin d. Plus the cottage cheese I toss into the smoothie I have every morning covers the rest - that said... I'm not taking any supplements any more (other than the protien I add to my smoothie in the morning) throw in a walk outside in the daylight for good measure and hopefully I'm getting enough. Was I vitamin d deficient? Prior to this - oh yeah for sure - I was a veg head for 7 years and had issues with dairy so I didn't do any kind of dairy except soy and even that not much!!! anyway - watching what you eat is the best way to go. Good article and it makes sense.