If a large amount of amaranth is consumed at one time, it may lead to redness in the urine.
Generally speaking, amaranth has more plant pigments, so if you consume a large amount of amaranth at one time, it can lead to excessive intake of water-soluble red pigments. These red pigments can be metabolized by the kidneys and then enter the urine, resulting in reddish urine. There is no need to worry too much as it is a normal phenomenon, and the color of urine will change to normal after drinking more water or having several bowel movements.
In addition, red urine may also be caused by urine bleeding, usually in the presence of heavy infection of the urinary tract, urinary stones, urinary malignant tumors and so on. Therefore, if the redness of urine, after excluding the cause of excessive consumption of amaranth, should promptly seek medical advice to find out the cause of the disease, under the guidance of the doctor scientific treatment.