Males and females (14-18.9 y) with habitual milk and milk products intake < 2 servings/d will be randomized (random numbers tables) to one of the three groups below; stratified based on sex and age to ensure balanced groups. All will be asked to consume a milk serving and milk products, examples are below. For this study milk can be skim, 1%, 2% or whole, cheeses are not processed (e.g. select regular cheddar, mozzarella) and yogurts may be of variable milk fat content.