Human Health & Disease Part-1|Class 12 Biology| NCERT Explained With Notes|NEET Concepts|JaisalVerse

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In this first part of Human Health and Disease, we’ll dive deep into the basic yet most important concepts that build the foundation of this entire chapter.
From ancient theories like the "Good Humour Hypothesis" to modern understanding of infectious and non-infectious diseases, this lecture covers it all — in the simplest and easy to understand explanation 💬

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💡 Topics Covered in this Lecture:

• Good Humour Hypothesis:
Ancient belief that our body’s health depends on the balance of four body fluids (humors).
People with black bile were considered hot personalities and were believed to have fever.
• Definition of Health
Understanding what “being healthy” truly means according to WHO and NCERT.
• Factors Affecting Health
Lifestyle, diet, environment, mental balance, and genetic makeup — how all these shape our well-being.
• Importance of Good Health
Why a healthy person contributes better to family, society, and nation.
• Ways to Maintain Good Health
Proper nutrition, hygiene, balanced routine, stress management, and physical fitness.
• Concept of Disease
What happens when the normal functioning of the body is disturbed.
• Infectious and Non-Infectious Diseases
Difference explained with examples —
🔹 Infectious: Malaria, Typhoid
🔹 Non-Infectious: Diabetes, Cancer
• Effects of Disease
How disease impacts physical, mental, and social well-being.

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📘 Highlights:
• Complete NCERT-based explanation in simple Hinglish
• Includes handwritten notes (JaisalVerse)
• Perfect for Boards + NEET aspirants
• Crisp examples + easy memorization tricks

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Next video - we will cover All Diseases caused by Pathogens (Part 2) 💪

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