Bladder infections, also known as cystitis, are a common type of urinary tract infection (UTI) that primarily affects the bladder. These infections typically occur when bacteria, often Escherichia coli (E. coli), enter the urinary tract and multiply in the bladder. The most common route of infection is the ascent of bacteria through the urethra. Women are more prone to bladder infections due to their shorter urethra, facilitating easier bacterial access to the bladder. Symptoms of bladder infections include frequent and urgent urination, a burning sensation during urination, and lower abdominal discomfort. While uncomplicated cases are often treated with antibiotics, recurrent or complicated infections may require further investigation to identify underlying causes such as urinary tract abnormalities or kidney stones. Preventive measures for bladder infections include staying well-hydrated, urinating promptly after sexual activity, and practicing good hygiene. Cranberry juice is often recommended for its potential to prevent bacterial adherence to the bladder wall, although the evidence is mixed. Additionally, antibiotic resistance poses a challenge in the management of bladder infections, emphasizing the importance of judicious antibiotic use and exploring alternative treatment approaches. Ongoing research aims to better understand the host-pathogen interactions in bladder infections, paving the way for more targeted therapies and improved prevention strategies.