The statement that amaranth cannot be eaten at night is not supported by scientific evidence, so there is no restriction on the time to consume amaranth. Amaranth is rich in iron, calcium, dietary fiber, vitamins and phytochemicals, which are good for calcium, iron and other trace elements, for the growth of teeth and bones, for bowel movement and intestinal detoxification, and for people who want to lose weight and control their weight. It can be eaten in a controlled amount in daily life, avoiding strong UV radiation. Because amaranth is a kind of food with strong sensitivity to light, eating it in large quantities in a short period of time can increase the sensitivity of human skin and may increase the absorption of ultraviolet rays, so people who are allergic to ultraviolet rays should not eat amaranth. After being exposed to strong sunlight or UV rays, the human body may develop “solar dermatitis”, where the exposed skin may become allergic to itching, red rash, or darkening of the skin. Therefore, it is not recommended to go out after consuming large amounts of amaranth in a short period of time. If you have to engage in outdoor activities, you can also protect yourself from the sun by wearing a sun hat, long-sleeved clothes, masks, sunglasses, etc.