Why is urine yellow? You must know these reasons!

Under normal circumstances, urine should be light yellow or light brown. If you drink too much water, your urine will be transparent.

However, you should be alert when your urine is yellow, as it may be cause by medication or drinking too little water, or even reproductive system diseases or liver and kidney diseases.

What does normal urine look like?

Urine is not simply an excretion produce after the water we drink is absorb. Urine is formed in the kidneys. When blood flows through the glomeruli, small molecules such as water, urea, inorganic salts, glucose, etc. in the blood will be filter into the renal capsule by the glomerular filtration membrane to form primary urine.

The primary urine flows through the renal tubules and collecting ducts. Most of the water, inorganic salts, glucose and other substances it contains will be reabsorb back into the body. The remaining small amount of water, inorganic salts, urea and uric acid will eventually form urine and be excret from the body through the urethra.

Generally speaking, a normal person’s daily urine volume is about 2500 ml. Since the capacity of an adult bladder is about 200-500 ml, the amount of urine each time is between 300-500 ml.

Healthy urine should be colorless, transparent or light yellow, without local precipitation and turbidity, sometimes with a little foam, but the foam will disappear quickly. It has a light ammonia smell, without obvious odor or pungent feeling.

What are the causes of yellow urine?

Drinking too little water

Generally, people’s need for water increases greatly in summer, but some people are lazy and drink less and less water. Drinking less water will concentrate the urine, causing the urine to turn yellow, just like morning urine. Just drink water in a standardized way, and never wait until you are thirsty to drink water.

First urine in the morning

If the first urine you pee in the morning is yellow, don’t worry. After a night’s sleep, the urine in the body is concentrate and the waste content increases, so the urine becomes yellow. Just drink more water to make the urine lighter, so don’t worry.

Food causes

Many foods contain natural pigments, such as anthocyanins and natural pigments contained in vegetables and fruits, which can also cause yellow urine, such as dragon fruit, kiwi, carrots, etc.

Getting angry

Many people will find that when the body is in a state of heat, the urine will easily turn yellow. It will also be accompanied by symptoms such as red and swollen gums, blisters at the corners of the mouth, and toothache.

At this time, you should arrange your diet structure reasonably, eat more fresh vegetables and fruits, and try not to eat spicy and irritating foods.

Drug-induced

Some drugs contain a lot of riboflavin, which can cause yellow urine. As long as the patient stops taking the drug, the yellow urine phenomenon will disappear.

Too much pressure

When the pressure is too high or the person is in a state of tension for a long time, the color will turn yellow. Studies have found that when the human body is overly angry or nervous, a lot of toxins will be produced. The toxins are mainly filter through the kidneys, resulting in yellow urine.

Liver lesions

It is very likely that there is a lesion in the liver and kidneys. Yellow color urine is mainly divide into urobilinogenuria and bilirubinuria. Urobilinogenuria is generally cause by liver damage. When the liver is damage, it will increase the intestinal absorption of urobilinogen. When urobilinogen enters the urine,

Bilirubinuria mainly refers to the bilirubin in the brain entering the blood circulation, usually due to the rupture of the bile duct, allowing bile to enter the blood.