Which one contains the most fat, skim milk or light milk? How about protein or calcium? A nutrition researcher explains.

Light blue was skim milk, navy blue was one-percent ... And the bright red color of its cap and label only reinforced and confirmed my jitters. Red was the color of warning, of danger, of unhealth.

“Inside the white milk that you drink, it’s actually green.” Wait, what? To take a step back: milk is white because of the tiny particles of proteins and droplets of fat are suspended in it.

Not all companies play by the rules, but here is a basic guide to make your next trip to the milk ... its cap) actually uses a white label with blue lettering. So if you're seeking skim, always ...