TED-Ed: Why do our bodies age? - Monica Menesini

The video explores the concept of aging, starting with the story of the oldest known person. It discusses the biological limits of human life, the challenges in defining aging scientifically, and the intrinsic and environmental factors that contribute to aging. Key physiological traits, such as genetic damage, mitochondrial decline, and epigenetic changes, are highlighted. The video also covers the decline in cellular regeneration, telomere shortening, and stem cell function. It concludes by speculating on future technologies that might extend human life and questions whether we desire such longevity.

What is the estimated natural lifespan capacity of human bodies?

• 122 years

• 70 years

• 90 years

• 100 years

What is a major challenge in defining aging scientifically?

• No observable effects

• Insufficient funding

• Lack of interest

• Complexity of biological processes

Which organelle is particularly susceptible to genetic damage as we age?

• Nucleus

• Ribosome

• Golgi apparatus

• Mitochondria

What happens to telomeres as cells replicate over time?

• They remain unchanged

• They lengthen

• They disappear

• They shorten

What is the role of stem cells in the aging process?

• They become more active

• They cause diseases

• They lose regenerative potential

• They increase in number

What is one potential future technology mentioned that could extend human lifespan?

• Artificial intelligence

• Cell-repairing nanobots

• Quantum computing

• Virtual reality

What is a key question about the future of human lifespan?

• How to decrease life expectancy?

• Do we want to live longer than we already do?

• How to increase population density?

• How to reduce birth rates?