A bladder infection is inflammation or irritation of the bladder, typically caused by bacteria. Your doctor may also refer to this as cystitis or a urinary tract infection (UTI) in your bladder. This ...

Though often mild, urinary tract infections can reach the bloodstream, leading to serious complications. Research also links diet and microbiome interactions with UTI susceptibility and recurrence.

Urinary tract infections (UTIs) can and do affect people of all ages. But for a variety of reasons, they occur more frequently in older adults, and particularly in older women. Learn why UTIs become ...