Robert F. Kennedy Jr. has praised fast-food chain Steak ‘n Shake for switching to beef tallow for frying and now introducing A2 milk, claiming it is easier to digest. A2 milk comes from cows that only produce the A2 form of beta-casein, potentially making it easier to digest. However, research on the differences between A1 and A2 milk in terms of digestion is limited, and both still contain lactose.

While A2 milk may have some benefits, plant-based milk remains a more environmentally friendly and healthier option. Plant-based milk is lower in saturated fats and calories, free of animal enzymes, cholesterol, and has a smaller environmental footprint. Some fast-food chains, like Burger King in Austria, have opted for oat milk over dairy, supporting a transition towards a more sustainable food system.