90-year-old people's gastrointestinal function is definitely weakened, so they don't want to eat, and they don't like to eat staple food, but they still have to eat enough nutrition to ensure their health. First of all, they must eat three meals a day, mainly porridge, millet porridge for breakfast and dinner, lean porridge for lunch, and light non-staple food. I am also old, my teeth are bad, my chewing function is poor, and I can't eat many snacks. I can eat some protein powder, soybean powder, black sesame paste and so on. Moderate, and drink some milk or yogurt every day to promote gastrointestinal peristalsis and enhance my body resistance!