If you don't produce much pre-cum and cum quickly it will probably be thicker. As has been said before if you are older and the sperm count is low and you still produce plenty of pre-cum; it will probably be clearer ejaculation.

Mine has got slightly thicker in recent years as I believe that my vasectomy cut has been partially reversed and some sperm are now getting through. However, as I do not now have sex with females, that is not a problem

Well I read it up and for me it's a double whammy!!!
As you get older your sperm count goes down and it's the amount of sperm that makes it creamier!! I had a vasectomy about 30 years ago so I don't have any swimmers anyway!! Seems odd that I have only just noticed it though!!!
Ah well, c'est la vie!!!

BTW, it's "prostate" not "prostrate"

mine is too. Doc said that's common and nothing to worry about. But, damn, I liked it better creamy. and give me MORE volume.

Eat more meat and potatoes just kidding not qualified to answer this question

mine has been getting clearer as I am getting oldes, if I edge a lot before a cum it thickens and gets whiter,

it's the fluid from your prostrate

It happens to me once in awhile. It goes from clear to creamy and vice versa every 2 or 3 months...