After masturbating I have noticed blood present in my sperm. Could it be a sign of cancer? There is no pain or any other symptoms.

Dr. Rahul GuptaSexologist10yrs exp

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Hello- Blood in semen occurs due to a variety of factors. It is also called 'hematospermia.' It mainly affects men after 30 years of age. It is always painless in the start, but it should be treated correctly. -Blood in semen can be caused due to infections, tumors and stones. -Abnormal body structure generally due to an autism spectrum disorder can also cause blood in semen. -Prostate biopsy (removal of tissues from the prostate region which produces semen) also leads to blood in sperm sometimes. Though this is temporary and heals within three to four weeks. -Vasectomy is a procedure done on men, which involves making small holes or slits in the scrotum so that the sperm doesn't flow during ejaculation. This is mainly done to prevent unwanted pregnancy. Sometimes, vasectomy causes blood in semen. -It is also caused by infections such as Herpes, Chlamydia and Trichomoniasis. -Sometimes, there are kidney stones found in the prostate called calculi, this is the most common reason for blood in semen. -Blood in semen can also be caused due to parasitic infection, tuberculosis or chronic liver diseases. 

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