Can Dehydration Cause a UTI?

Dehydration does not cause a UTI but can significantly increase your risk of developing a urinary tract infection (UTI). When you're dehydrated, you produce less urine, which means bacteria that enter your urinary tract aren't flushed out as frequently. This allows harmful bacteria like E. coli to multiply and adhere to the walls of your bladder and urethra. Studies show that drinking less than 6 glasses of water daily can double your UTI risk. Additionally, concentrated urine from dehydration creates an environment in which bacteria can thrive. Women are particularly susceptible, as dehydration combined with their shorter urethra increases infection likelihood by up to 40%. Maintaining proper hydration by drinking 8 glasses of water daily helps prevent bacterial buildup and supports your body's natural defense mechanisms against urinary tract infections. Urine should be light yellow or colorless. Darker urine, in the absence of disease, means you need to increase your total fluid intake from foods and beverages.