Health is a symbol of the proper functioning of the body. The World Health Organization (WHO) understands this concept and broadly defines health as a state of complete physical, social and emotional.

To do otherwise is to have health suffer any physical or mental illness, which is a disruption in the smooth functioning of the body.

Health and disease are at the heart of Medicine and the study of the central concern of human beings, and that health is directly related to the quality and length of life.

History of Medicine

The man's quest for survival has led him to investigate medical solutions since antiquity. In almost all cultures these practices were more related to witchcraft or faith to science.

The Greek Hippocrates is regarded as the father of modern medicine, but this science, in fact, does not begin to be seen as such and to leave everything spiritual and religious until the eighteenth century.

Today, we see the incredible advances that have occurred in medicine, but also the boom taking medicines based alternatives to traditional and natural.

Symptoms and signs of disease

The absence of health or the existence of any disease is detected by the presence of symptoms and/or signs. Doctors diagnosed diseases from two parameters, namely through what they perceive and what the patient indicates:

·  Symptoms: sensations are detected by the patient and can be a pain.

·  Signs: the observable phenomena that can check the doctor as fever.

Ill health habits

The reasons that may lead to disease are varied. There are certain patterns of healthy living that can help maintain health, such as feed in an appropriate manner, not smoking and not eat other harmful substances.

Based on that health is related to the physical and emotional, some of the factors that help to achieve a higher state of well-being and improved quality of life are:

·  Lifestyle: It depends, for example, if they have more or less healthy habits, stress management and physical activity to be performed.

·  The place where life is a very polluted environment can be detrimental to health, for example in the case of asthmatics.

·  The agency: some people are determined by genetics or predisposed or by accident to contract certain diseases.

·  The social circumstances: generally does not have the same health premature children born in a developed country, who was born in an underdeveloped country. This is because the health care you receive are very different.