This theory is still espoused by many fitness and health "gurus," on the grounds that egg whites are "healthier" for you as they are high in protein but low in fat.
However, as we have discussed at length before, dietary fat is not necessarily bad for you in the first place - as long as you're eating the right kinds, and avoiding the wrong ones...
I have addressed this topic here before, but I thought I would share a guest post with you today from one of my favorite nutritional experts. If you are still on the fence about whether you should really eat the yolks, maybe this will help clear up the confusion for you!