According to my panel of nutritionists, a cow’s diet can make a difference in the quality of whey protein. If the cows are grass-fed, the milk they produce (and any whey protein derived from it ...

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While 0.8 grams of protein per kilogram of body weight per day (e.g. 56g per day for a 154-pound person ... whose cows are grass-fed year-round without hormones to then produce whey.