Health (3rd)

CLEAN AND GREEN ENVIRONMENT HEALTH-LESSON 1 (3RD QUARTER)

Poor Environmental Sanitation and Its Effects

  • Diseases and Disorders: Poor environmental sanitation can lead to various diseases, notably:

    • Respiratory diseases

    • Gastrointestinal diseases

    • Skin diseases

Respiratory Diseases

  • Definition: Illnesses affecting the respiratory system (nerves and muscles involved in breathing).

  • Examples:

    • Common cold

    • Sore throat

    • Rhinitis

    • Asthma

    • Primary complex / Tuberculosis

  • Triggers: Poor sanitation and hygiene practices, particularly affecting children with low body resistance.

Gastrointestinal Diseases

  • Definition: Diseases affecting the gastrointestinal tract and associated digestive organs (liver, gallbladder, pancreas).

  • Key Contributing Factors:

    • Poor personal hygiene

    • Poor environmental sanitation

    • Limited access to clean water

Diarrhea

  • Description: Frequent and liquid bowel movements; opposite of constipation.

  • Causes: Infectious agents (viruses, bacteria, organisms) and contaminated food.

  • Fun Fact: Diarrhea acts as a defense mechanism to expel germs and toxins.

  • Note: "Traveler's diarrhea" is common due to different food and water hygiene in new places.

Cholera

  • Description: Infection of the small intestine leading to severe diarrhea.

  • Consequences: Dehydration, electrolyte imbalance, and potential death if untreated.

  • Prevention: Access to safe drinking water and good sanitation practices.

  • Historical Fact: John Snow identified contaminated water as a spread route for cholera in 1854, laying groundwork for epidemiology.

Dysentery

  • Description: Infectious disease resulting from ingestion of contaminated food and water.

  • Transmission: Often spread by infected individuals handling food without proper hygiene.

Neurological Impairments

  • Definition: Diseases related to the brain and spinal cord.

  • Causes: Mercury poisoning due to exposure to mercury or its compounds, which adversely affects the nervous system.

  • Effects: Harmful to mental and physical health, through inhalation or contact via food/water.

Skin Diseases

  • Overview: Skin as the largest organ sensitive to various elements.

  • Conditions Due to Pollution:

    • Eczema

    • Scabies

    • Ringworms

    • Other skin infections

LET US KEEP OUR ENVIRONMENT CLEAN - HEALTH-LESSON 2 (3RD QUARTER)

Importance of Environmental Sanitation

  • Definition: The art and science of improving/control of the environment using sanitary, biological, and physical science principles for public health protection.

The Need for Clean Water

Common Household Water Treatment Methods

  1. Disinfection

    • Purpose: Eliminate harmful microorganisms to prevent waterborne diseases (cholera, typhoid fever, hepatitis A).

    • Methods: Chemical (chlorine, chlorine dioxide, ozone) and physical (ultraviolet light, electronic radiation, heat).

  2. Filtration

    • Description: Separation of solids from liquids by passing them through a filter.

    • Process: Uses porous material; requires routine cleaning (backwashing) to remove impurities.

  3. Distillation

    • Method: Purifying liquids by boiling and collecting steam, leaving contaminants behind.

WATER FILTER EXPERIMENT - HOW TO FILTER DIRTY WATER

  • Materials Needed:

    • Rocks

    • Pebbles and Sand

    • Fine Sand

    • Charcoal

    • Cotton

    • 2 Liter Bottle