Lecture Notes on Human Growth and Genetics

Key Points

Genetic Contribution to Growth

• Study on Genetic Influence:
  • Conducted in 2015 on the influence of genetics on human growth.
  • Conclusion: Genetics account for approx. 9% of growth variations.
  • Other factors include environmental influences, nutrition, and lifestyle.

Physiological Factors in Growth

• Growth effects on brain development and physiology.
• Importance of cartilage in long bone growth.
• Epiphyseal Plate: Crucial for bone growth until around ages 19-14 when it typically closes, limiting further growth.

Age and Growth

• Common peak growth ages: adolescence (up to approx. age 19).
• Some individuals might experience slight growth until age 25, depending on individual circumstances.

Physical Activity and Bone Health

• Exercise Impact: Regular physical activity can enhance bone mineral density, contributing to stronger bones.
• Types of Exercise:
  • Resistance training for muscle strengthening and bone health.
  • Importance of conditioning and balanced exercise programs.
• Postural improvements can sometimes give the appearance of increased height.

Misconceptions and Myths about Height

• Numerous online sources claim miraculous height increases which are generally unsubstantiated.
• Realistic approach: exercise can improve posture and overall physical condition but not significantly increase height after growth plates close.

Conclusion

• Scientific Approach: Importance of a factual, scientific understanding of growth and genetics.
• Recommendation: Regular, well-rounded exercise for optimal health rather than focusing solely on increasing height.