Why are sexually active females at higher risk for urinary tract infections?

Sexually active females are at a higher risk for urinary tract infections (UTIs) primarily due to the introduction of bacteria into the urinary tract during sexual activity. When penetration occurs, bacteria from the genital and anal areas can be pushed towards the urethra, which can lead to infection. The urethra in females is relatively short and located near the rectum, making it easier for bacteria to invade the urinary tract.

The other options don’t reflect the primary reasons for the increased UTI risk. Drinking less water can contribute to UTIs due to concentrated urine, but it is not directly related to sexual activity. Larger bladders do not have a direct connection to UTI susceptibility; rather, it’s the anatomical factors and proximity of the genital area to the urethra that significantly influence this risk. Lastly, urinating less frequently can increase the risk of UTIs due to urine stagnation, but this is not specifically linked to sexual activity, which is the core factor in this context. Thus, the correct option highlights the critical role of sexual activity in UTI development.