What is the reason for yellow urine?

There are many reasons that lead to yellow urine, including both physiological reasons and disease reasons. Physiological reasons include drinking too little water. For example, sweating too much and drinking too little water can easily cause this phenomenon, especially in the morning when urinating for the first time. This is most likely to cause yellow urine, such as liver and kidney diseases. Let us learn about this aspect below.

What is the reason for yellow urine?

1. Yellow urine due to physiological factors

Yellow morning urine is yellow. If your first urination after getting up in the morning is yellow, there is no need to worry. Because after a whole night of rest, the urine in the body will be concentrated, the waste content will be higher, and the color will be yellower. Especially when you drink less water, the color of your morning urine will be darker. This is normal and there is no need to worry. Food causes Eating vegetables and fruits with natural pigments, such as carrots, can also change the color of your urine. However, this phenomenon is only temporary. If you drink a few more cups of water, it will gradually return to normal.

2. Pathological yellow urine: liver and kidney diseases

In clinical examinations, yellow urine is divided into two categories: one is bilirubinuria and the other is urobiligenuria. Bilirubinuria refers to the condition in which bilirubin in the gallbladder enters the blood circulation. The cause is usually inflammation of the bile duct, which causes the bile duct to rupture, resulting in bile entering the blood. Urobilinogenuria is caused by liver damage. Liver damage increases the intestinal absorption of urobilinogen, and when urobilinogen dissolves into urine, yellow urine appears. In addition, people with hemolytic anemia will have massive destruction of red blood cells, and urobilinogen will also be absorbed through the intestines, causing the liver to be unable to convert a large amount of urobilinogen into bilirubin, which will also cause urobilinogenuria.

How to tell your health from the color of your urine

1. Colorless urine: It may be a sign of diabetes, chronic interstitial nephritis, or diabetes insipidus. If it is not caused by drinking too much water, you should be careful to identify it. 2. White urine: It looks like milk, sometimes mixed with white clots or blood, indicating that there is chyle in the urine, which comes from filariasis or blockage of the kidneys or lymphatic vessels. 3. Soy sauce urine: It is caused by the massive destruction of red blood cells in the urine. It may also be acute nephritis, acute icteric hepatitis and hemolytic jaundice. 4. Red urine: It indicates that there may be an excess of red blood cells in the urine, also known as "hematuria", which is mostly caused by kidney disease, stones, prostatitis, bladder tumors, etc. If severe low back pain occurs accompanied by hematuria, it is most likely caused by stones, such as kidney stones, ureteral stones, etc.