Why Is My Urine Yellow – 5 facts for Nigerians

Wonder why urine has a yellow color and why it changes it? Read on to get the answers.

The human body is a very complex and multifaceted system.  Thousands of processes performed in our body every day and every second that we cannot explain just with a simple conjecture. This requires an explanation of specialists and scientific studies that will lead a chain to a logical conclusion. One of such issues that sounds a little childish, but at the same time, not every adult can give an answer to it, is: why is my urine yellow? Can you simply answer the question? Barely, if not being familiar with the biology. Shall we try to explain to understand this?

why is urine yellow

The physiological process

Urine is one of the products released after processing the substances entering our body, just as feces or sweat. Of course, the color of these emissions depends directly on what person had put in the inside. All nutrients are absorbed after passing through the processing and excess fluids are filtered and leave the body in the natural way.

why is urine yellow 3Impurities and their contents

Such substances are contained in human urine as:

  • excess water,
  • various salts,
  • the product of final decay, a substance named “urobilin”,
  • bilirubin and urobilinogen chemicals agents.

The last of the list changes when exposed to sunlight, becoming urobilin. 

Latter is darker that urobilinogen, so urine color may change with prolonged exposure to the sun.

Plus, as you may see on the picture, urine contains many other elements in it. 

Differences in color

Natural dyes also leave their marks on the body’s waste products. For instance, if you eat beets, your yellow urine may be reddish, orange from carrots and have a greenish tint from rhubarb.

why is urine yellow 2The intensity of the color depends on the saturation of the consumed liquids or substances. 

The lighter the shade of natural yellow urine, the fewer wastes it contains. 

The natural color can vary from light to deep yellow. Please note that any other colors (red, green, orange, etc.) are unnatural and should have any cause. Typically, this is because of disease or eaten products (like mentioned above beets or carrots).

Another difference is age. The urine of infants can be almost colorless or have a reddish color in the first few days after birth. This is due to an increased content of acid in urea. The older the person, the more saturated the color of his natural urinary excretions become.

Symptoms of disease

Discoloration of urine may be a symptom of certain diseases. If your urine becomes darker than usual rapidly, it may indicate:

  • dehydration, infectious diseases, burn or disease of kidneys,
  • hemolytic anemia (especially with dark brown color),
  • such illness as malnosarkoma, homogentisuria, various diseases of kidneys (till the appearance of the black impurities in the excretions),
  • jaundice (green tint or color, reminiscent of fermented beer).

If you noticed that the separations became lighter, it may be a sign of following:

  • polyuria illness,
  • renal failure,
  • diabetes,
  • lymphostasis of kidneys (with whitish secretions),
  • fatty degeneration of the kidneys.

It is necessary to consult a doctor if any unreasonable changes in natural color occur. The color of the urine can vary not only due to the consumption of coloring products, but also because of tablets (medications), such as:

  • Aspirin (paints in pink color),
  • drugs against tuberculosis (do the brown-red tint),
  • medications against parasites (paint in brick red),
  • potassium-preserving drugs (do the blue-green color),
  • Vitamin B2 (colors in orange).


interestnig facts on urine

  1. Filled bladder of an adult is like a rugby ball in the size.
  2. The kidneys filter blood fluid about 20 times per day.
  3. Each kidney, which weight does not exceed 150 grams, contains about a million of operating units – cells named “nephrons”.
  4. Causes of yellow urine are urochrome’s presence (thing that literally paints this liquid) that prevails among the majority of impurities.
  5. The color of urine is one of the main criteria for the general medical analysis.

READ ALSO: Why do we dream? – 5 top theories.

Urine color depends on several factors, such as the daily diet, age, presence of disease, medications taken etc. However, natural color remains yellow. Why is my urine yellow? The answer is because shade of yellow prevails in the urine due to the high content of substance named “urochrome” and this is absolutely normal. So, if the color of your excretions is abnormal or changed suddenly, you need to visit a doctor as soon as possible. The body functions like clockwork – all organs and "gears" are interrelated. Preventing disease at an early stage of unusual color, you can avoid much more serious problems.


From the body together with urine removes excess salts, water and end products of substances, one of which urobilin is formed from bilirubin bile by bacteria that live in our intestines. The main part of the bilirubin leaves the body along with the feces, and the other is absorbed into the blood where it is excreted into the urine by the kidneys.

Color of urine is directly related to its concentration. So, after drinking a litre of water and after a short period converge to the toilet, one can observe almost colorless urine, however, for example, in hot weather it becomes dark yellow.

By the way, interesting fact — if the urine in the jar to leave the light on for a few hours, it will darken. Why? It's simple — each person in the body of urobilinogen, which, being oxidized in air, is converted into urobilin

Answered 1 year ago.
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