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We might not usually think about all the different things that make up the male ejaculate, but they're actually really quite interesting. Semen doesn't just contain sperm cells (which is why calling it just "sperm" is ultimately wrong), but also fructose (a sugar), protein, adrenaline and dopamine, and various enzymes. All these components — produced by different parts of your reproductive system, including the testicles, Cowpder's glands, and seminal vesicles — are ultimately part of the complex "machine" that's your body. It should come as no surprise, then, that the appearance of a man's semen can say a lot about his overall health as well as the health of his reproductive system. 

Your ejaculate is the way it should be if:

  • It has a gray-white tint
  • It thick and a bit sticky, and of a uniform consistency — but it becomes much more liquid after about 20 minutes
  • It doesn't smell bad — a hint of chlorine is all you should rally be smelling
  • Its volume is between two and six ml if you haven't had sex in two days to a week
  • It has a sperm count of 200 to 500 million, though you won't know by looking

Your foods you eat, a temporary illness, or a night of binge-drinking can all cause temporary changes in the appearance of your semen. Changes that persist do warrant a trip to the doctor, however, whether you have blood in your semen, a foul smell, a very yellow color, or indeed very watery semen. Trusting that you'll take the advice to seek medical advice to heart if you have noticed that your semen is very "liquid", "thin", or "watery", here are some possible causes. 

Causes Of Watery, Thin, Semen

What men call "watery semen", doctors may refer to as an "absence of coagulation" — because normal semen coagulates (thickens) upon ejaculation and then liquefies later. This can be caused by many different factors. 

Anecdotally, frequent ejaculation sometimes causes watery semen. This is why you can try abstaining from sex and masturbation for a few days and see whether your semen is thicker when you resume sexual activity.

A zinc deficiency is another possible cause of watery semen. This is something a blood test can determine. If you are deficient, you can try supplements or you can increase your intake of foods that contain zinc, such as oysters, crab, beef, chicken, chickpeas, kidney beans, and lobster. Keep in mind that you need around 11 mg of zinc a day. 

Ejaculatory duct obstruction or being born without seminal vesicles can likewise lead to watery semen. In the latter case, your semen will always have been this way.

Because these conditions will also interfere with your fertility, it is important to get checked out by a doctor. It is fine to turn to your family physician first — after discussing your symptoms with them, they may choose to refer you to a urologist for further testing that will determine the cause of your watery semen. Every man's semen differs slightly, so don't assume the worst right away. If you suffer from a long-term medical condition, knowing what is wrong will benefit you. If you don't, you'll get to go home without needing to worry about your semen any longer. 

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