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Health and Diseases - UPSC Science And Technology
What is Health and Diseases in UPSC Science And Technology?
Health and Diseases is a key topic under Science And Technology for UPSC Civil Services Examination. Key points include: Sickle Cell Disease (SCD) is a genetic blood disorder causing abnormal, sickle-shaped red blood cells.. It leads to blocked blood flow, severe pain (sickle cell crisis), organ damage, and reduced life expectancy.. SCD disproportionately affects tribal communities in India, identified as a major health issue by MoHFW.. Understanding this topic is essential for both UPSC Prelims and Mains preparation.
Why is Health and Diseases important for UPSC exam?
Health and Diseases is a Easy-level topic in UPSC Science And Technology. It is tested in both Prelims (factual MCQs) and Mains (analytical answer writing). Previous year UPSC questions have frequently covered aspects of Health and Diseases, making it essential for comprehensive IAS preparation.
How to prepare Health and Diseases for UPSC?
To prepare Health and Diseases for UPSC: (1) Study the comprehensive notes covering all key concepts on Vaidra. (2) Practice previous year questions on this topic. (3) Connect it with current affairs using daily updates. (4) Revise using key takeaways and mind maps available for Science And Technology. (5) Write practice answers linking Health and Diseases to related GS Paper topics.
Key takeaways of Health and Diseases for UPSC
- Sickle Cell Disease (SCD) is a genetic blood disorder causing abnormal, sickle-shaped red blood cells.
- It leads to blocked blood flow, severe pain (sickle cell crisis), organ damage, and reduced life expectancy.
- SCD disproportionately affects tribal communities in India, identified as a major health issue by MoHFW.
- India has launched the 'Sickle Cell Eradication - 2047' mission, marked by a commemorative stamp on 15th Nov 2024.
- The 2047 target aims for complete eradication of sickle cell anaemia, focusing on vulnerable populations.
Health and Diseases
Easy⏱️ 5 min read
science and technology
📖 Introduction
Understanding Sickle Cell Disease (SCD)
Sickle Cell Disease (SCD) is a severe genetic blood disorder that affects millions globally. It is characterized by an abnormality in haemoglobin, the vital protein responsible for carrying oxygen throughout the body.
The core issue in SCD is the production of abnormal haemoglobin S, which causes red blood cells (RBCs) to become rigid and take on a characteristic sickle or crescent shape, especially under low oxygen conditions.
Nature of Sickle Cell Disease
Unlike healthy, flexible red blood cells, the sickle-shaped cells are stiff and sticky. This abnormal shape prevents them from flowing smoothly through small blood vessels, leading to blockages.
These blockages impede blood flow to various organs and tissues, causing a range of severe complications and symptoms. The disease is hereditary, meaning it is passed down through families.
Impact on the Body
The consequences of SCD are profound and systemic. Blocked blood flow leads to a lack of oxygen in tissues, causing intense pain and organ damage over time. It significantly reduces the life expectancy of affected individuals.
The Ministry of Health and Family Welfare (MoHFW) tribal health expert committee has specifically identified Sickle Cell Disease as one of the ten major health issues predominantly affecting tribal communities in India.
Key Symptoms of SCD
Individuals suffering from Sickle Cell Disease experience a variety of debilitating symptoms, which can vary in severity and frequency. These symptoms are a direct result of the abnormal red blood cells and their impact on circulation.
- Chronic Anaemia: A persistent lack of healthy red blood cells leads to symptoms such as extreme fatigue, general weakness, and noticeable paleness of the skin.
- Painful Episodes (Sickle Cell Crisis): These are sudden, severe, and intense bouts of pain. They can occur in the bones, chest, back, arms, and legs, caused by blood vessel blockages.
- Delayed Growth and Puberty: Children and adolescents with SCD often experience slower physical development compared to their peers due to the chronic stress on their bodies.
For UPSC, understand SCD not just as a disease, but as a significant public health challenge, especially concerning vulnerable populations like tribal communities. Be ready to discuss its genetic basis and socio-economic impact.
💡 Key Takeaways
- •Sickle Cell Disease (SCD) is a genetic blood disorder causing abnormal, sickle-shaped red blood cells.
- •It leads to blocked blood flow, severe pain (sickle cell crisis), organ damage, and reduced life expectancy.
- •SCD disproportionately affects tribal communities in India, identified as a major health issue by MoHFW.
- •India has launched the 'Sickle Cell Eradication - 2047' mission, marked by a commemorative stamp on 15th Nov 2024.
- •The 2047 target aims for complete eradication of sickle cell anaemia, focusing on vulnerable populations.
🧠 Memory Techniques
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