Fathers of young children may face health challenges. In this article, the authors sought to characterize health-related challenges among fathers of young children (aged 4 years or younger) through the use of an Internet survey. Questions covered an unusually large battery of outcomes related to men's health, including general health, affect, and sexual function. A total of 126 adult fathers provided usable data. The most notable findings were that scores on the General Health Questionnaire, Kessler Psychological Distress Scale, and negative affect indicated poor general health and high levels of distress and negative affect compared with normative data. Relationship satisfaction, sexual desire, and sexual activity were similar to normative data, although sexual enjoyment with and without a partner were lower among fathers participating in this study. Some variables were associated with each other (e.g., relationship satisfaction and affect) but most were not. This study also indicates that fathers can be successfully recruited through Internet-based survey research.