Why is urine very yellow and turbid?

Urine is actually composed of some garbage waste and water in the human body, so urine is actually very dirty. However, urine is not without some benefits. For example, during medical examinations, the composition of human urine can be tested, which can help people determine what disease they have. In life, urine is normally transparent, so why is urine very yellow and turbid?

(I) Pyelonephritis

Infectious inflammation of the renal pelvis and calyceal mucosa, renal tubules, and renal interstitium caused by direct invasion of various pathogenic microorganisms. In recent years, it has been found that pathogen antigens exist in the renal scar tissue of some patients with pyelonephritis, indicating that immune renal tissue damage may also be one of the causes of inflammation in the onset of pyelonephritis.

1. Pathogenic bacteria

The most common pathogenic bacteria causing pyelonephritis is Escherichia coli, followed by Escherichia coli, Proteus, and Streptococcus faecalis.

2. Transmission route

(1) Ascending infection: This route is the most common. When the body's resistance is reduced and the urethral mucosa is slightly damaged, bacteria can easily invade the bladder and kidneys and cause infection. The female urethra is much shorter and wider than the male urethra. The urethral opening of baby girls is often contaminated by feces, which can easily cause disease. Bacteria that ascend to the kidneys first invade the renal pelvic mucosa, causing inflammation, and then ascend through the renal calyces, papillae, and renal tubules to invade the renal parenchyma.

(2) Hematogenous infection: Bacteria invade the bloodstream from lesions in the body and reach the kidneys, causing inflammation. In hematogenous infection, the bacteria first reach the renal cortex, where they form numerous small abscesses, and then spread downward along the renal tubules to the renal papilla and renal pelvis.

(3) Lymphatic tract infection.

(4) Direct infection: When there is trauma or infection of organs adjacent to the kidney, bacteria can directly invade the kidney and cause inflammation.

(ii) Prostatitis

When suffering from chronic prostatitis, white urine is likely to occur due to inflammatory stimulation.

(III) Others

Excessive exercise or overeating of meat and vegetables leads to excessive metabolism of oxalate and phosphate, which produces salt crystals in the urine. These accumulate in the bladder and are excreted during urination, resulting in white urine.