📝 Detailed Answer
I have personally experienced the struggle of following a trendy diet only to end up with severe abdominal pain. The benefits of oatmeal are clear: it is rich in dietary fiber, which promotes satiety and prevents sharp spikes in blood glucose, making it helpful for appetite control.
However, from the perspective of Traditional Korean Medicine (TKM), we must consider 'Spleen Deficiency' (Bi-heo, 脾虛), a state where digestive functions are impaired. If someone with a weak Spleen suddenly consumes large amounts of coarse grains like oatmeal, the stomach may fail to process them properly, leading to the accumulation of 'Phlegm-Fluid' (Dam-eum, 痰飮)—metabolic waste products. This is why some people experience excessive gas or loose stools.
Therefore, there is no 'one-size-fits-all' answer. While oatmeal is an excellent energy source for those with strong digestion and high activity levels, it can be taxing for those who are naturally prone to poor digestion or have a 'cold' body constitution. I recommend monitoring your body's response and gradually increasing the portion size. If you continue to feel bloated during your diet, seeking a constitutional consultation at a TKM clinic would be the most efficient way to find a diet that suits you.