Study Finds A2 Milk May Not Be the Ideal Choice for Milk-Sensitive Individuals

Recent research from the University of Turku in Finland suggests that A2 milk, often marketed as a gut-friendly alternative for those with milk sensitivities, may not be universally better for individuals experiencing gastrointestinal symptoms. The study investigated the effects of A2 milk and protein-hydrolyzed lactose-free milk on gut health, considering both lactose-tolerant and lactose-intolerant participants.

The findings revealed that lactose-free, protein-hydrolyzed A1A2 milk was well tolerated by lactose-intolerant people and caused fewer stomach symptoms in lactose-tolerant individuals, comparable to A2 milk. This indicates that breaking down milk proteins through hydrolysis could be an effective strategy for reducing gastrointestinal discomfort in sensitive consumers.

Interestingly, some participants experienced symptoms across all types of milk, including during periods when they completely avoided dairy, highlighting that factors beyond milk proteins and lactose may contribute to gut issues. The study also found no significant differences in inflammatory markers such as high-sensitivity CRP and fecal calprotectin among the various diets, implying that milk intolerance symptoms are complex and multifactorial.

This research emphasizes the importance of individual lactose tolerance levels when considering dairy consumption. It also suggests that dietary symptoms attributed solely to milk may often involve other elements, making personalized dietary strategies essential. The study involved 36 participants divided according to their genetic lactase enzyme activity, using a crossover trial design to compare responses.

While A2 milk continues to be marketed as a healthier option, these results indicate that lactose-free protein-hydrolyzed milk might be an optimal choice for those with lactose intolerance, offering similar or better gastrointestinal comfort. Future research is needed to better understand the multifaceted causes of milk-related gut symptoms and improve dietary recommendations for sensitive populations.

Source: medicalxpress.com