The Princess of Wales is reported to enjoy a breakfast with a green twist, including ingredients like seaweed, vegetables, and blueberries. This meal reportedly includes a "green smoothie" made from kale, spirulina, matcha, spinach, lettuce, cilantro, and blueberries, served alongside a bowl of oatmeal. To understand the nutritional value of this breakfast, we turn to Julie Boît, a dietitian-nutritionist, who reviews the various components of this "green" meal. Spirulina, a type of blue-green algae, is highlighted for its high content of proteins, iron, and antioxidant pigments such as phycocyanin. It also contains vitamins, minerals, carotenoids, and other compounds that help protect cells from oxidative stress. The high protein content of spirulina makes it a popular choice among vegetarians and vegans. However, Boît notes that while spirulina is nutritious, it does not melt fat or, on its own, significantly transform one's health. It is best considered as a beneficial addition to a varied and balanced diet. Contrary to common belief, spirulina does not provide sufficient amounts of vitamin B12, an essential nutrient for nerve function and the production of red blood cells. Therefore, individuals who require vitamin B12 supplementation cannot rely solely on spirulina to meet their needs. Boît emphasizes the importance of a well-rounded diet and, when necessary, the use of supplements to ensure all nutritional requirements are met. The Princess of Wales's breakfast reflects a growing trend of incorporating nutrient-dense, plant-based foods into daily meals. While such a diet can offer numerous health benefits, it is crucial to maintain balance and ensure that all essential nutrients are adequately covered. As with any dietary choice, individual needs and health conditions should be taken into account.