For example, it controls digestion, respiration, the contractions of the heart and of smooth muscles in blood vessels, and the release, by the endocrine system, of hormones which regulate metabolism and growth. Hormones themselves can influence behaviour by their effects on specific parts of the brain.
Hematuria is also common in older men due to the use of certain medications or prostate enlargement. Blood in urine may occur due to infection, inflammation, or injury to the urinary system. Small amounts of blood are typically associated with kidney damage, while lower urinary tract conditions lead to gross hematuria. Kidney and ureter stones commonly cause hematuria in individuals younger than 40 years of age.
Common causes of blood in urine include: 1  Bladder or kidney infections. 2  Bladder or kidney stones. 3  Certain kidney diseases, such as inflammation in the filtering system of the kidneys (glomerulonephritis)  Enlarged prostate (benign prostatic hyperplasia) or prostate 1  cancer. Inherited diseases such as sickle cell anemia and cystic kidney disease.