Chapter 10

The second law of thermodynamics operates constantly and randomly in biological systems. Explain why this property of the second law prevents the modulation of aging.

Some suggest that the gains in life expectancy observed in the past 100 years reflect successful interventions in aging. Is this correct? Discuss why or why not.

Consider the following statement: biogerontologists need to stop asking "Why do we die?" and begin asking "Why do we live?" Explain how this might change the way we approach research on aging.

Using examples from both nonhuman primates and humans, describe why calorie restriction may not be as effective in humans as in other species.

Explain why exercising at intensity above that at which you can comfortably talk results in the use of more glucose than fatty acids for ATP synthesis.

A regular program of exercise decreases resting heart rate and blood pressure and increases red blood cell number. Why?

Discuss the relationship between rate of aging and reserve capacity. Explain how regular exercise may increase reserve capacity.

Discuss the reasons why the 1947 WHO definition of health may not apply to medicine in the twenty-first century. Speculate on how the WHO definition could be improved.

Based on current information on what our society may look like in the future, do you wish to have a significantly longer healthspan and life span? Why or why not?