@ossobuco,
osso,
There is nothing, apart from a virus, that will cause a computer to become steadily constipated as cookies. They are both evasive and invidious. Even if you have a program such as CCleaner, it will not detect and delete all the cookies you accumulate unwittingly over time.
But fear not, you're in luck. For 10ยข, one thin dime (and you can owe me that) I can tell you how to eliminate the suckers. That is, if you have a windows PC. I don't know about a Mac, but I assume that apples don't lead to constipation anyhow.
If you have a PC and think you'd like to have a go, I'll tell you this much up front: The remedy was given to me by none other than Microsoft Technical Support, and it requires nothing more than what is already installed on every windows machine. This colonic (if you will) takes no more than 30 to 45 seconds to complete.
I had been running CCleaner once or twice a day for several years and it always gave me a nice report of how many cookies it had removed after each run. But when the Microsoft tech guy had control of my PC by Remote Assistance, he opened an internet file and gasped before deleting at least 75 pages of cookies which had evaded my feeble attempts.
Seriously, the Microsoft gurus recommend that everyone delete cookies on a regular basis to maintain top performance.