Health education is a profession of educating people about health. Areas within this profession encompass environmental health, physical health, social health, emotional health, intellectual health, and spiritual health, as well as sexual and reproductive health education.Health education can be defined as the principle by which individuals and groups of people learn to behave in a manner conducive to the promotion, maintenance, or restoration of health. However, as there are multiple definitions of health, there are also multiple definitions of health education. In America, the Joint Committee on Health Education and Promotion Terminology of 2001 defined Health Education as "any combination of planned learning experiences based on sound theories that provide individuals, groups, and communities the opportunity to acquire information and the skills needed to make quality health decisions." The World Health Organization defined Health Education as "compris[ing] [of] consciously constructed opportunities for learning involving some form of communication designed to improve health literacy, including improving knowledge, and developing life skills which are conducive to individual and community health."Health education has evolved into health promotion. Health education is any combination of learning experiences designed to facilitate voluntary actions conducive to health. Health promotion is the combination of educational and environmental supports for actions and conditions of living conducive to health, thereby including health education. four other main developments are relevant: the need for planning (the PRECEDE–PROCEED model), the importance of evaluation, the use of social and behavioral science theories in the development of health promotion interventions (the Intervention Mapping process). Finally, recent developments in information technology (e.g., computer tailoring) and their effect on health promotion are presented.