CBSE Grade-12 Biology | 7. HUMAN HEALTH AND DISEASE by Pavan | Learn Smarter
Students

Academic Programs

AI-powered learning for grades 8-12, aligned with major curricula

Professional

Professional Courses

Industry-relevant training in Business, Technology, and Design

Games

Interactive Games

Fun games to boost memory, math, typing, and English skills

7. HUMAN HEALTH AND DISEASE

7. HUMAN HEALTH AND DISEASE

Health encompasses not only the absence of disease but also the broad spectrum of physical, mental, and social well-being. Infectious diseases such as typhoid, pneumonia, malaria, and AIDS present significant threats to human populations. The chapter discusses the role of the immune system in disease prevention, the implications of drug and alcohol abuse, and the ongoing need for public health measures and education to promote healthier lifestyles and disease prevention strategies.

17 sections

Enroll to start learning

You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.

Sections

Navigate through the learning materials and practice exercises.

  1. 7
    Human Health And Disease

    This section discusses the importance of biology in understanding human...

  2. 7.1
    Common Diseases In Humans

    This section discusses common diseases in humans, their causes, symptoms,...

  3. 7.2

    Immunity is the body's ability to resist infections through innate and...

  4. 7.2.1
    Innate Immunity

    Innate immunity is the body's first line of defense against pathogens,...

  5. 7.2.2
    Acquired Immunity

    Acquired immunity is a specific defense mechanism of the body characterized...

  6. 7.2.3
    Active And Passive Immunity

    This section discusses active and passive immunity, differentiating their...

  7. 7.2.4
    Vaccination And Immunisation

    Vaccination is a crucial public health measure that creates an acquired...

  8. 7.2.5

    Allergies are exaggerated immune responses to specific environmental...

  9. 7.2.6
    Auto Immunity

    Autoimmunity occurs when the immune system mistakenly attacks the body's own...

  10. 7.2.7
    Immune System In The Body

    The human immune system safeguards the body by identifying and eliminating...

  11. 7.3

    AIDS, caused by the HIV virus, leads to severe immune deficiency, making...

  12. 7.4

    Cancer is a major health concern characterized by uncontrolled cell growth...

  13. 7.5
    Drugs And Alcohol Abuse

    This section discusses the rising issue of drug and alcohol abuse among...

  14. 7.5.1
    Adolescence And Drug/alcohol Abuse

    This section explores the challenges of adolescence, particularly focusing...

  15. 7.5.2
    Addiction And Dependence

    The section discusses the addictive nature of drugs and alcohol, explaining...

  16. 7.5.3
    Effects Of Drug/alcohol Abuse

    Drug and alcohol abuse has significant immediate and long-term effects on...

  17. 7.5.4
    Prevention And Control

    Prevention and control of drug and alcohol abuse are essential, especially...

What we have learnt

  • Health is a state of complete physical, mental, and social well-being.
  • Infectious diseases can be caused by various pathogens, necessitating specific preventive measures.
  • The immune system plays a crucial role in defense against pathogens and is integral to vaccination and immunization strategies.

Key Concepts

-- Public health measures
Strategies implemented to prevent disease transmission and maintain community hygiene.
-- Immunity
The ability of the body to resist disease-causing organisms, categorized into innate and acquired immunity.
-- AIDS
Acquired Immuno Deficiency Syndrome, a condition caused by the Human Immuno deficiency Virus (HIV) leading to weakened immunity.
-- Cancer
A disease characterized by uncontrolled cell growth, leading to the formation of tumors.
-- Drug abuse
The repeated use of drugs or alcohol that leads to addiction and adverse health consequences.

Additional Learning Materials

Supplementary resources to enhance your learning experience.