What it is
Whey protein isolate is a more highly filtered milk protein with high protein percentage and usually less lactose and fat than concentrate.
Core function and why it is studied
The core connection is the recognized physiological role described above. Research therefore examines protein adequacy, muscle protein synthesis, and exercise recovery, while supplement value still depends on baseline intake or status, the form used, and the outcome being measured.
What the evidence means
The physiological role is well established. Supplement benefit is most predictable when intake or status is inadequate; more is not automatically better.
How to compare products
Compare protein grams, amino-acid profile, source, allergen statement, flavor system, and independent contaminant testing.
