I've read that once you break the yoke and cook it, you destroy the goodness of the yoke, so I only eat poached and boiled eggs now.

From a Dr. Mercola article "Scrambling your eggs is one of the worst ways to eat eggs as it actually oxidizes the cholesterol in the egg yolk. If you have high cholesterol this may actually be a problem for you as the oxidized cholesterol may cause some damage in your body."