That's always been my take on rice too... as mainly a macro for carbs (or with brown rice, a bit of fiber).

There's enriched rice which has added vitamins. Washing enriched rice _should_ wash out whatever's been added. I don't know about other types of rice, but I've heard rice is supposed to be neutral to the meal, so I assume not.

USDA has a nutrient database. It isn't always completely accurate, but it is probably a lot better than conventional wisdom ;-)

http://ndb.nal.usda.gov/ndb/foods/show/6568?fgcd=&manu=&lfac...