Magnesium in milk: compare ordinary and protein-fortified formulations

The amounts in the reference foods

USDA’s final SR Legacy 2018 release reports whole milk with vitamin d: 10 mg per 100 g; 2% milk with vitamins a and d: 11 mg per 100 g; skim milk with vitamins a and d: 11 mg per 100 g; protein-fortified 2% milk: 16 mg per 100 g. These are named historical reference foods, not measurements of a current package or meal. [1]

What changes the interpretation

Removing milk fat does not proportionally remove magnesium in these records. The protein-fortified entry is a different formulation and should not be assigned to all 2% milk. The listed vitamin A or D additions also do not mean magnesium was added. Plant-based drinks and flavored milks require their own declarations. [1]

A hypothetical portion comparison

For a hypothetical equal 244 g comparison, the ordinary whole-milk estimate is 24.4 mg, while ordinary 2% and skim each give 26.84 mg. The protein-fortified 2% entry gives 39.04 mg. The common mass is chosen to compare formulations, not to certify every carton’s cup weight. The table uses the explicitly chosen edible weights. Scale a matching per-100-g value by the grams eaten divided by 100; a count of pieces or an unspecified spoonful is not the same denominator. [1]

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