Why Do I Get a UTI Every Time I Have Sex?
Medically reviewed by Linda Girgis | MD, Girgis Family Medicine on August 20th, 2026.
Sexual activity increases UTI risk by introducing bacteria into the urinary tract. During intercourse, E. coli bacteria from the anal area can be pushed toward the urethra, especially in women due to their shorter urethral length of about 4 centimeters. The friction and movement during sex can also irritate the urethra and bladder, making infection more likely. Women are 50 times more likely to develop UTIs than men because of anatomical differences. Contributing factors include not urinating before or after sex, dehydration, certain contraceptives like spermicides, and individual susceptibility. Prevention strategies include urinating within 30 minutes after intercourse, staying well-hydrated, and maintaining proper hygiene practices.
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