The survey of Italian women under age 40 found that: - 79% reported their first experience with street harassment before age 17, with 57% before age 15. - Nonverbal harassment like staring and whistling were most common, while exposure was least reported. - Over half experienced groping in the past year and 69% felt unsafe due to being followed. - Harassment most often occurred on the street, public transit, and in cities, and resulted in strong negative emotions. - Over half changed their behavior like routes, clothing, and social activities due to harassment fears.