Health: A Comprehensive Guide to Physical, Mental, and Social Well-being
Definition of Health
Health encompasses complete physical, mental, and social well-being, as defined by the World Health Organization (WHO). The United Nations Development Index (HDI) measures the quality of life based on factors such as life expectancy, education, and per capita GDP. Countries with higher HDI include Iceland, Norway, Australia, Sweden, Canada, and Japan.
Factors Influencing Quality of Life
The quality of life depends on various factors, including:
- Prosperity: Economic security and access to resources
- Happiness and Satisfaction: Positive emotions and contentment with life
- Physical Health: Absence of disease or injury
- Mental Health: Emotional and psychological well-being
- Personal Autonomy: Ability to make decisions and control one’s life
- Social Relationships: Strong and supportive connections with others
Factors Preserving Health and Preventing Diseases
- Absence of Harmful Agents: Protection from biological (bacteria, viruses), chemical (poisons, pollutants), physical (radiation, noise), and social (violence) hazards
- Healthy Habits and Lifestyle: Maintaining self-esteem, having a sense of purpose, practicing self-care, and engaging in leisure activities
- Hereditary Factors: Genetic predispositions to certain diseases
- Effective Health System: Access to quality healthcare services for prevention, diagnosis, and treatment
Rights and Obligations
Individuals have the right to health, but also the responsibility to take care of their health, use medical resources wisely, and promote healthy behaviors.
Objectives for a New Millennium
Global health objectives include:
- Eradicating poverty
- Ensuring primary education
- Empowering women
- Reducing child mortality
- Improving maternal health
- Combating HIV/AIDS
- Providing access to clean water
- Allocating 0.7% of GDP to development assistance
- Ensuring access to essential medicines
External Defenses Against Infection
- Structural: Skin and mucous membranes act as barriers
- Mechanical: Movements and currents remove germs
- Biochemical: Microbicidal substances
- Environmental: Non-pathogenic microbes prevent pathogens from entering
Internal Defenses Against Infection
- Unspecific: Absorbing, trapping, and killing microbes
- Specific: Lymphocytes produce antibodies to destroy or inactivate pathogens
Medical Interventions for Infections
- Interferon: Glycoprotein that inhibits viral multiplication
- Vaccines: Weakened or dead bacteria injected to stimulate antibody production
- Serum: Contains antibodies that provide passive immunity
- Chemotherapy and Antibiotics: Chemical substances that inhibit the growth of microorganisms
Disease
Disease occurs when any part of the body ceases to function properly. Diseases can be classified based on:
- Origin: Infectious or non-infectious
- Speed and Duration: Acute or chronic
- Frequency Distribution: Sporadic, endemic, or epidemic
Infectious Diseases
Infectious diseases are caused by pathogens that enter the body.
Viruses
- Pathogens with a protein coat (capsid) and genetic material (DNA or RNA)
- Enter cells and use their machinery to replicate
- Can cause acute or chronic infections
Bacteria
- Prokaryotic microorganisms that can be found in various environments
- Can cause infections by invading cells and producing toxins
Fungi, Protozoa, Prions
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Transmició infectious diseases: direct contact, inert objects, water intake, food, air, animals transmitters.
Diseases Anisakis, white intestinal worm had, lladelles, trichinosis, lice, scabies
Infectious disease incubation phase development and reproduction of microorganisms entry, does not manifest symptoms. Infesta disease signs and symptoms of disease appear, act and internal defenses, or eliminate germs spreading infection or convalescence once removed or diminished microbes body repairs damage.