[44] Aging and Energy Metabolism

Question 1

What is the general effect of aging on energy metabolism?

Answer 1

Aging generally leads to a decrease in energy metabolism, reflected in a reduced basal metabolic rate.

Question 2

What are some factors contributing to the decrease in energy metabolism with age?

Answer 2

• Decreased muscle mass
• Changes in hormone levels
• Reduction in physical activity

Question 3

How does aging affect thermogenesis?

Answer 3

Aging often leads to a decrease in thermogenesis due to a decline in metabolic rate and reduced efficiency of the thermogenic processes.

Question 4

What physiological changes related to energy metabolism can occur with aging?

Answer 4

• Reduced mitochondrial function
• Decreased insulin sensitivity
• Changes in body composition, such as increased fat mass and decreased lean mass

Question 5

How does aging influence the body’s energy requirements?

Answer 5

With aging, the body’s energy requirements typically decrease due to a reduction in lean body mass and a slower metabolic rate.

Question 6

How can nutrition and exercise help counteract the effects of aging on energy metabolism?

Answer 6

Proper nutrition and regular exercise can help maintain muscle mass, improve insulin sensitivity, and boost metabolic rate, which can counteract some of the negative effects of aging on energy metabolism.