THIRD-PARTY RESEARCH

The independent research studies linked below reference casein and other dairy proteins, and are provided for educational purposes only. They do not evaluate or imply health claims about GRYP.

Sustained Muscle Protein Synthesis

This category highlights studies showing casein’s ability to stimulate MPS like whey initially—but with longer-lasting effects due to slower digestion.

  • Reis et al., 2020 (Front Nutr) — PubMed
  • Kim, 2020 (Phys Act Nutr) — PubMed
Overnight Recovery & Muscle Gains

These studies show that pre-sleep casein not only improves overnight muscle protein synthesis, but also enhances long-term muscle growth and strength when paired with resistance training.

  • Groen/Res et al., 2012 (Med. Sci. Sports Exerc.) — PubMed
  • Snijders et al., 2015 (J. Nutr.) — PubMed
  • Kouw et al., 2017 (J. Nutr.) — PubMed
  • Trommelen & van Loon, 2016 (Frontiers in Nutrition) — PMC
Anti-Catabolic Benefits of Slow-Digesting Proteins

These studies focus on casein’s slow gastric emptying and prolonged amino acid release—leading to less protein breakdown and better net protein balance.

  • Boirie et al., 1997 (PNAS) — PMC
  • Dangin et al., 2001 (AJP-Endo) — PubMed
Sustained Satiety & Appetite Regulation

This study focuses on how casein supports longer-term fullness, compared to whey’s shorter-term effects—useful for anyone watching appetite or calorie intake.