What foods might be eliminated to help keep my bladder and kidneys healthy?

I've already eliminated added salt. I don't buy salt-free or low-salt, as they're generally more expensive. I don't do much fast food, basically just cook for myself. I'm 82, single and live alone. Happily! I have no idea what foods might be eliminated from my consideration to help keep my bladder and kidneys healthy. I'm very allergic...

Bladder & Urine Infections

  For women and men with interstitial cystitis, urinary tract infections or an overactive bladder, I want to provide you with good resources from a dietitian. Please consider "Confident Choices: Customizing the Interstitial Cystitis Diet" and "Confident Choices: A Cookbook for IC and OAB" by Julie Beyer, dietitian.