Comparing Inflammation, Lactose Intolerance and Lactose Maldigestion in Lactose Maldigesters on Consumption of Commercial Milk Containing A1 and A2 Beta-Casein and A2 Milk Containing Only A2 Beta-Casein for Two Weeks
Cow's milk contains two types of β-casein: A1 and A2. It is evident from human clinical trials that milk with A1 protein produces more hydrogen and symptoms of lactose intolerance. A pro-inflammatory μ-opioid peptide BCM-7 is released from A1 but not from A2. Milk containing A1 β-casein produced more inflammatory markers than A2 β-casein. This is a double-blinded, randomized, controlled trial conducted to determine if there are changes in inflammatory markers following two weeks of milk feeding, due to milk containing A1 and A2 beta-casein as compared to milk containing only A2 beta-casein.
• Ability/desire to provide informed consent Aged 18 to 65 years of age inclusive at screening Current or recent history of intolerance to or avoidance of dairy of at least one month duration (by self-report and self-reported symptoms).
⁃ Agrees to refrain from all other treatments and products used for dairy intolerance (e.g., Lactaid® Dietary Supplements) during study involvement Willing to return for all study visits and complete all study related procedures Able to understand and provide written informed consent in English