Social isolation has become a growing concern in modern society, impacting mental health and overall well-being. AI sex dolls offer a unique solution by providing companionship and interaction for those who experience loneliness or difficulty forming human relationships. These dolls can serve as non-judgmental confidants, offering emotional support through conversations and responsive behaviors tailored to individual preferences. For individuals with social anxiety, autism, or other social challenges, AI sex dolls can act as a safe environment to practice social skills and build confidence. They also fill a void for people living in remote areas, elderly individuals, or those with limited social opportunities. Importantly, while AI dolls cannot replace human connection entirely, they can alleviate some of the negative effects of prolonged loneliness, such as depression and anxiety. The customization options available in AI sex dolls allow users to create a personalized experience, fostering a sense of companionship and understanding. As research advances, these dolls could become even more sophisticated, helping bridge the gap between social needs and available human interactions, ultimately contributing to improved mental health and emotional resilience.