Why is urine yellow?

We see it every day throughout our entirelife. Have you ever asked yourself why urine is yellow? Of course, there were different shades, but mostly it is always yellow. Strangely, we drink clear water, tarhun - green, Pepsi - black, and the result at the output is always the same - yellow. Let's try to understand.

Urine is formed in the kidneys as a result of filtrationblood. In Urine itself contains 95% water. The rest is accounted for by the breakdown products of proteins and salts. Proteins are urea, hippuric acid, creatinine, xanthine, indikan, bile pigments. Salts are phosphates, sulphates, nitrates. Why is urine bright yellow (saturated color), yellow, light yellow? All right, this is the norm of healthy color!

The color of urine normally determines only a complex of bile pigments. It includes urobilin (urochrome), urobilinogen, uroerythrin. It is because of them that urine always acquires a shade of yellow.

Normal and saturated coloration when urineyellow or bright yellow, depends on the specific gravity, in other words, on the concentration of bile pigments per unit volume. This is influenced by the factors of vital activity of the organism and the environment.

For example, a bright yellow color may be characteristicat dehydration of an organism in hot weather, at the big physical activities or the use of alcohol. In such cases it is necessary to saturate the body with moisture - to drink water, otherwise chronic dehydration can lead to the formation of kidney stones.

Healthy coloring can change with usesome products that have a persistent pigment (beets, carrots). All other abnormal urine colors indicate inflammatory or painful processes in the body and require laboratory tests.