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Cah4.0

Casein Hydrolysate Research

Mostly mechanism / observational

55 peer-reviewed studies

What the evidence says

Mostly mechanism / observational

Most Casein Hydrolysate studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.

Most evidence is from high-quality meta-analyses and randomised trials published 1978–2025 with a typical study size of 100 participants.

Based on 54 studies · 1 meta-analysis · 49 RCTs · 311 total participants

Confidence

Moderate confidence

By outcome

Anxiety & stressModest reduction in stress-related symptoms and state anxiety in small RCTs (stressed women, healthy volunteers under lab stress); effects small and several trials industry-linked · Acute effects within hours; symptom changes over 2-4 weeks · Blunted blood-pressure and cortisol response to acute stressors in a small healthy-volunteer trial; lowered serum cortisol and perceived-stress scores in a stress/acne RCT · Acute (single dose) to 4 weeks
Mostly mechanism / observational7 studies
Sleep & insomniaMixed — one crossover RCT in poor sleepers improved sleep-diary latency and efficiency, but two combination-product RCTs were null on their primary sleep endpoints · 2-4 weeks of nightly use · Some reduction in wake-after-sleep-onset and increased total sleep time on sleep diaries in Lactium trials; objective polysomnography largely unchanged · 2-4 weeks of nightly use
Mostly mechanism / observational5 studies

Steady research

9 studies in the last 5 years · Latest meta-analysis: 2022

197820012025

1Meta-Analysis2022

Zhou S, Xu T, Zhang X, Luo J, An P, Luo Y · Nutrients (2022)

Casein Hydrolysate Research

Mostly mechanism / observational

Effect of Casein Hydrolysate on Cardiovascular Risk Factors: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

Soluble adhesion molecules and oral antigen feeding in infants.

A low allergen diet is a significant intervention in infantile colic: results of a community-based study.

Dietary manipulation of beta cell autoimmunity in infants at increased risk of type 1 diabetes: a pilot study.

The effect of casein hydrolysate intake on cerebral neural regulation during cognitive tasks in the elderly.

Colic and the effect of changing formulas: a double-blind, multiple-crossover study.

Bovine casein hydrolysate (c12 Peptide) reduces blood pressure in prehypertensive subjects.

Safety of a thickened extensive casein hydrolysate formula.

Growth of infants with IgE-mediated cow's milk allergy fed different formulas in the complementary feeding period.

Gastric emptying, gastric secretion and enterogastrone response after administration of milk proteins or their peptide hydrolysates in humans.

Comparison of energy supplements during prolonged exercise for maintenance of cardiac function: carbohydrate only versus carbohydrate plus whey or casein hydrolysate.

Variable Glycemic Responses to Intact and Hydrolyzed Milk Proteins in Overweight and Obese Adults Reveal the Need for Precision Nutrition.

Nutritional evaluation of protein hydrolysate formulas in healthy term infants: plasma amino acids, hematology, and trace elements.

Antigenicity of infant formulas: role of immature intestine on protein permeability.

Efficacy of alphas1-casein hydrolysate on stress-related symptoms in women.

Effect of combined maternal and infant food-allergen avoidance on development of atopy in early infancy: a randomized study.

Hydrolyzed casein decreases postprandial glucose concentrations in T2DM patients irrespective of leucine content.

Whey protein stimulates postprandial muscle protein accretion more effectively than do casein and casein hydrolysate in older men.

Carbohydrate-Restricted Exercise With Protein Increases Self-Selected Training Intensity in Female Cyclists but Not Male Runners and Cyclists.

Hydrolyzed infant formula and early β-cell autoimmunity: a randomized clinical trial.