(6 Videos) 1  Inspirational basketball player Lauren Hill dies at 19. 2  2014: First college game is dying player's last. 3  2014: Terminally ill girl realizes hoop dream.  Cancer patient lives basketball 1  dream. Lauren Hill's dream game.  College athlete's dying wish granted.
Semen is normally a whitish-gray color. It's usually quite thick after ejaculation, but liquefies within 30 minutes. Changes in the appearance of semen might be temporary and not a health concern. However, sometimes these changes can be a sign of an underlying medical condition that requires further evaluation.emen is normally a whitish-gray color. It's usually quite thick after ejaculation, but liquefies within 30 minutes. Changes in the appearance of semen might be temporary and not a health concern. However, sometimes these changes can be a sign of an underlying medical condition that requires further evaluation.
There are many causes of yellow sperm. The most common is that as a man ages, sperm naturally takes on a yellow pigment. For younger men, diet can play a role in sperm color. A mild infection or urine in the semen has the same effect. The most serious cause of yellow sperm is a sexually transmitted disease (STD). An STD requires a consultation with a physician to both treat the disease and make sure it is not spread to future sexual partners. Yellow sperm is a natural sign of the aging process in men.