Sexual Health involves more than just avoiding STI's. To achieve good sexual health it is important to have the appropriate knowledge and skills to support one in making informed decisions.
"Sexual health is a state of physical, emotional, mental and social well-being related to sexuality; it is not merely the absence of disease, dysfunction or infirmity. Sexual health requires a positive and respectful approach to sexuality and sexual relationships, as well as the possibility of having pleasurable and safe sexual experiences, free of coercion, discrimination and violence. For sexual health to be attained and maintained, the sexual rights of all persons must be respected, protected and fulfilled."
Source: WHO Draft working definition, October 2002