And many people who are suffering from some known disease, may be relatively healthy. Health is a concept which does not merely relate to the absence of disease, of healthy working of organs, or having good thoughts. Health is a holistic concept. It relates to a person as a whole. Not just the person you see, but also the person you ‘feel’. Health is a tri-une of three parts: - Emotional Health-Mental Health-Physical Health. Source(s): http://hpathy.com/homeopathy-papers/the-...