Protein needs plateau at 1.6 g/kg/day (Morton et al., Br J Sports Med 2018). Per 100 g: 35 kcal, 3.4 g protein, under 1 g fat. Skim milk is one of the leanest protein sources per calorie.
How should I track Milk, nonfat, fluid, without added vitamin A and vitamin D (fat free or skim)?
The best way to track Milk, nonfat, fluid, without added vitamin A and vitamin D (fat free or skim) is by weight, not volume. A 200 g serving of yogurt or cheese varies in density between brands and fat levels, so the same portion can differ by 20–40 calories. Research shows people underestimate calorie-dense dairy portions by up to 50% when eyeballing (Almiron-Roig et al., Appetite 2013). A kitchen scale keeps things honest. Also check whether the label lists values for the product as sold or as prepared — some powdered or concentrated dairy products show very different numbers once mixed.
