Endemic

Endemic- native to a certain place; regularly occurring within an area

Ex: The fast-food joints that stud the ramshackle strip malls endemic to the urban food swamp of Houston, Texas have kept their beefy Texan population well-fed and with sodium coursing through their blood at levels reminiscent of the salt composition of the Dead Sea. You know what they say: you put a Houstonite in a piss-filled public pool, they’ll never sink. If they ever seem like they’re about to drown, their bodies’ last-ditch defense mechanism involves redirecting fluid into their cankles to serve as a built-in floatation device.