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Calcium is the primary mineral involved in bone formation and maintenance. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Structural Organisation in Animals and Frog, Topic: Tissues, skeletal and organ systems.
Osteoporosis is caused by decreased calcium absorption, not increased absorption. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.
Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Zoology section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Zoology portion (Latest NCERT Textbooks for Academic Session 2026-27 - Rationalized Edition for Class XI and XII), Topic: Structural organization, physiology, human health and related concepts as per latest syllabus.
Calcitonin, secreted by the thyroid gland, inhibits bone resorption, thereby reducing blood calcium levels.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Osteoporosis is a condition where bones lose density, making them fragile and prone to fractures.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Disorders of Muscular and Skeletal System
Osteoporosis is caused by decreased calcium absorption, not increased absorption.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Disorders of Muscular and Skeletal System
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