This is one of the articles I wrote during my Herbalist Certification course. It’s chock full of good information about urinary tract health, so if you have bladder issues, pay attention! References are cited at the bottom of the page.
Just like the book with the title referring to the opposite end of the digestive system, Everybody Pees. There are many ways to maintain a healthy Urinary Tract system, but the fact remains that we all must do so or suffer detrimental health consequences.
The simplest method to making sure you don’t end up with urinary problems is to remain hydrated. While problems can still arise due to other circumstances that your body may be subjected to, the simple act of drinking enough water is your biggest and best shield for protecting your kidneys and bladder. Your urine should be almost clear, to very light yellow if you are drinking enough. Generally speaking, if you “feel thirsty,” your body has already begun to dehydrate and you definitely need to drink. On this same note, making sure you eliminate often enough is crucial. It doesn’t matter how much your boss wants you to take care of a customer if your bladder is so full it might explode. Take regular bathroom breaks and ignore your co-workers or friends if they make fun of you for going “too often.” Regular water intake and elimination is crucial for kidney function, and functioning kidneys are a necessity for life.
Some supplements that can be helpful in maintaining your urinary tract include cranberry juice (or a supplement pill,) blueberries, and probiotics such as yogurt or kombucha. The berries contain high amounts of Vitamin C and help prevent bacteria from attaching to the uterine lining (in women.) Wearing breathable cotton underwear and maintaining a clean genital area (without the use of highly-perfumed soaps or douches) will also help prevent any infections from taking hold. Men can avoid the risk of contracting a urinary tract infection by drinking plenty of water, eliminating often, and maintaining clean genitalia. For both genders, urinating and washing up after sexual intercourse is also a crucial key to preventing bacteria climbing up the urethra.
If, despite your best efforts, you do end up with a burning, itchy, painful sensation whenever you urinate, you probably have a Urinary Tract Infection. It is actually quite possible to treat a UTI without antibiotics, though if you attempt these methods without success it is best to see your doctor anyway. Reduce or eliminate your intake of sugary, highly-processed foods, start taking a supplement of cranberry or acidophilus (probiotics are widely available in pill form,) or you can drink low-sugar cranberry juice and eat low-sugar yogurt. Balancing the bacteria in your gut with the help of kombucha, water kefir, sauerkraut, or other fermented foods will absolutely help to bring balance to your other bodily systems via their antifungal and antiviral properties. 
As an adult with a UTI, you can avoid citrus fruits and make sure you drink lots of water, but you also have several herbal remedy options for treatment. Provided you aren’t pregnant, breastfeeding, or have known kidney problems, horsetail can be a helpful supplement. A capsule of horsetail extract two or three times daily may be helpful for alleviating some of the symptoms of bladder and urinary tract infections, incontinence, and even bed wetting because it can relieve the urge to urinate.  Parsley made into a tea/infusion may also help, as it is a diuretic and will increase the flow of good urine through the urethra, helping clean out the bad bacteria. Uva ursi is another herb that can help treat urinary tract infections if used on a short-term basis. And I have personally had success working with a tincture of corn silk when a burning sensation has come along.
Preventing kidney stones is another common Urinary Tract concern, but it is usually possible to prevent these with many of the same methods as preventing a UTI. Drink plenty of water, exercise regularly, avoid highly-processed foods and sugars, and eat fresh, whole foods whenever possible. If you have a history of kidney stones, you may also want to avoid eating too much sodium and try to get your calcium needs from foods rather than supplements. Beets, chocolate, spinach, rhubarb, tea, and most nuts are rich in oxalate, and colas are rich in phosphate, both of which can contribute to kidney stones. If you suffer from stones, your doctor may advise you to avoid these foods or to consume them in smaller amounts. It is also important to get most of your Vitamin D from sunlight exposure, rather than supplements. The most natural method of acquiring your vitamins and minerals is always best.
With a good dose of sunshine and vegetables, regular exercise, and plenty of water, you too can maintain your body’s urinary system, avoid the unpleasant problems, and have happy pee.