HUMAN HEALTH
& DISEASE
NEET + Class 12 | Complete Handwritten Notes
Mnemonics • PYQs • Quick Revision • Diagrams
Biology Chapter 8
TOPICS COVERED
Health & Disease Basics Pathogens & Infection Common Diseases
Immunity (Innate & Acquired) Vaccination AIDS / HIV
Cancer & Tumors Drug & Alcohol Abuse
NEET PYQs & MCQs Quick Revision Charts
Crafted with for NEET Aspirants
, Table of Contents
1 Introduction to Human Health pg. 3
2 Types of Diseases pg. 4
3 Pathogens & Modes of Transmission pg. 5
4 Common Human Diseases — Bacteria & Virus pg. 6
5 Common Diseases — Protozoa & Worms pg. 7
6 The Immune System pg. 8
7 AIDS / HIV pg. 9
8 Cancer pg. 10
9 Drugs & Alcohol Abuse pg. 11
10 NEET Important Tables pg. 12
11 NCERT Important Lines & Quick Notes pg. 13
12 NEET PYQs & MCQs pg. 14-15
13 Quick Revision & Mnemonics pg. 16
1
, 1. INTRODUCTION TO HUMAN HEALTH
Definition of Health
"Health is a state of complete physical, mental and social well-being
Components
and of Health
not merely the absence of disease or infirmity." — WHO (1948)
PHYSICAL HEALTH MENTAL HEALTH SOCIAL HEALTH
• Body functions normally • Emotional well-being • Good relationships
• Organs work efficiently • Stress management • Community participation
• Balanced diet + Exercise • Positive attitude • Social responsibilities
• Good BMI & fitness • Coping with challenges • Harmony with society
Factors Affecting Health
Balanced Diet Adequate nutrients — carbs, proteins, fats, vitamins, minerals, water
Personal Hygiene Regular bathing, clean clothes, handwashing, oral hygiene
Community Health Clean water, sanitation, vaccination, vector control programs
Exercise Regular physical activity maintains fitness and immunity
Rest & Sleep 7-8 hours of sleep essential for cell repair and immunity
IMPORTANT FOR NEET
• Health = Physical + Mental + Social well-being (WHO definition is direct NEET question)
• Balanced diet essential for immunity — deficiency leads to disease
• Community health programs include vaccination, vector control, sanitation
2
& DISEASE
NEET + Class 12 | Complete Handwritten Notes
Mnemonics • PYQs • Quick Revision • Diagrams
Biology Chapter 8
TOPICS COVERED
Health & Disease Basics Pathogens & Infection Common Diseases
Immunity (Innate & Acquired) Vaccination AIDS / HIV
Cancer & Tumors Drug & Alcohol Abuse
NEET PYQs & MCQs Quick Revision Charts
Crafted with for NEET Aspirants
, Table of Contents
1 Introduction to Human Health pg. 3
2 Types of Diseases pg. 4
3 Pathogens & Modes of Transmission pg. 5
4 Common Human Diseases — Bacteria & Virus pg. 6
5 Common Diseases — Protozoa & Worms pg. 7
6 The Immune System pg. 8
7 AIDS / HIV pg. 9
8 Cancer pg. 10
9 Drugs & Alcohol Abuse pg. 11
10 NEET Important Tables pg. 12
11 NCERT Important Lines & Quick Notes pg. 13
12 NEET PYQs & MCQs pg. 14-15
13 Quick Revision & Mnemonics pg. 16
1
, 1. INTRODUCTION TO HUMAN HEALTH
Definition of Health
"Health is a state of complete physical, mental and social well-being
Components
and of Health
not merely the absence of disease or infirmity." — WHO (1948)
PHYSICAL HEALTH MENTAL HEALTH SOCIAL HEALTH
• Body functions normally • Emotional well-being • Good relationships
• Organs work efficiently • Stress management • Community participation
• Balanced diet + Exercise • Positive attitude • Social responsibilities
• Good BMI & fitness • Coping with challenges • Harmony with society
Factors Affecting Health
Balanced Diet Adequate nutrients — carbs, proteins, fats, vitamins, minerals, water
Personal Hygiene Regular bathing, clean clothes, handwashing, oral hygiene
Community Health Clean water, sanitation, vaccination, vector control programs
Exercise Regular physical activity maintains fitness and immunity
Rest & Sleep 7-8 hours of sleep essential for cell repair and immunity
IMPORTANT FOR NEET
• Health = Physical + Mental + Social well-being (WHO definition is direct NEET question)
• Balanced diet essential for immunity — deficiency leads to disease
• Community health programs include vaccination, vector control, sanitation
2
