Amid concerns over air pollution stressing the body, the choice of dairy milk can play a role in maintaining gut health. According to a gastroenterologist, A2 milk is the preferable option, particularly for those with sensitivities, as it is generally easier to digest than A1 milk.
The key difference lies in the beta-casein protein found in dairy milk.
The Problem with A1 Milk
- Protein Type: A1 milk contains the beta-casein A1 protein.
- Digestion Issue: When the A1 protein is digested, it may release a peptide called Beta-Casomorphin-7 (BCM7).
- Gut Effects: For some individuals, BCM7 has been linked to digestive issues such as inflammation, bloating, and an upset stomach.
- Pollution Factor: During periods of high air pollution and environmental stress, the body is already under pressure. Consuming A1 milk may add an unnecessary digestive burden, or “irritate your gut even more,” as cautioned by Dr. Sukrit Singh Sethi.
Why A2 Milk Is Recommended
- Gentler Protein: A2 milk contains only the beta-casein A2 protein.
- No Culprit Peptide: The A2 protein does not release the BCM7 peptide during digestion, which is the factor associated with gut problems.
- Better Digestion: Individuals who are sensitive to conventional milk often find A2 milk much easier to digest and experience reduced symptoms like bloating or discomfort. This supportive effect on digestive well-being is considered beneficial when the body is simultaneously coping with pollution-related stress.
Final Verdict
- For those with generally strong digestion, both A1 and A2 milk are safe options.
- For individuals with mild sensitivities to lactose or certain proteins—or anyone looking to lessen the stress on their system during high pollution—A2 milk is the better choice.
Opting for digestion-friendly choices like A2 milk helps support the body when it is already under strain from external factors like air pollution.