"Redefine protein quality to include chronic disease risk The nutrition world has historically defined 'protein quality' almost entirely around amino acid completeness and digestibility — a framework that consistently favors animal sources. Hill argues this definition is dangerously narrow: 'our definition of quality has to be muscle-related outcomes but also chronic disease health span outcomes.' Choosing plant protein over animal protein for the same muscle result means you simultaneously avoid the saturated fat, hormones, and other compounds from animal agriculture while gaining fiber, polyphenols, and micronutrients. In practical terms, Hill frames it as a two-for-one: 'you can optimize for your skeletal muscle and your bone by making sure you're eating enough total protein, but then by choosing more plant protein you are also optimizing cardiometabolic risk factors like APOB, blood pressure, blood glucose control.' Anyone evaluating their protein choices purely on muscle outcomes is leaving a large portion of the health equation unmeasured. Source: Simon Hill, Rich Roll Podcast, 2025 Dietary Guidelines Deep Dive"