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.
Blood in Urine Causes. Blood in the urine may or may not be accompanied by pain, but it is always abnormal and should be further investigated by a healthcare professional. Painful blood in the urine can be caused by a number of disorders, including infections and stones in the urinary tract. Painless blood in the urine can also be due to many causes, including cancer. Blood in the urine is also referred to as hematuria.