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Aging and Lifestyle Factors

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Questions and Answers

What is the approximate percentage of slowed vitamin D synthesis in people aged 65 years compared to younger adults?

75% (correct)

25%

90%

50%

What is the projected change in the prevalence of Dementia by 2050?

It is expected to triple (correct)

It is expected to decrease by half

It is expected to double

It is expected to remain the same

What is a modifiable risk factor for Alzheimer's disease?

Genetics

Family history

Age

Mid-life obesity (correct)

What is a key component of a healthy diet that may help offset the risk of developing dementia?

Oily fish providing omega-3 fatty acids (A) Signup and view all the answers

What is the effect of increased ROS production on telomeres?

It causes telomere shortening (D) Signup and view all the answers

What is the estimated proportion of Alzheimer's disease cases attributable to modifiable risk factors?

One third (C) Signup and view all the answers

What is the primary source of ROS production within cells?

Mitochondria (A) Signup and view all the answers

What is the primary factor in immune dysregulation in older people?

Oxidative stress (A) Signup and view all the answers

What is the effect of caloric restriction on ROS production?

It decreases ROS production (A) Signup and view all the answers

What is associated with a reduced rate of telomere shortening?

Omega-3 fatty acids (D) Signup and view all the answers

What is the effect of a Mediterranean diet on telomere length?

It preserves telomere length (A) Signup and view all the answers

What is the effect of obesity on telomere length?

It decreases telomere length (D) Signup and view all the answers

What is the effect of calorie restriction on energy metabolism and ROS production?

It reduces energy metabolism and ROS production (A) Signup and view all the answers

What is the effect of calorie restriction on telomere length in rodents?

It has a positive effect (D) Signup and view all the answers

What is the term used to describe the age-related increase in pro-inflammatory markers in blood and tissues?

Inflammageing (C) Signup and view all the answers

What can reduce the rate of telomere shortening and extend health span?

Calorie restriction, healthy diet, and regular exercise (D) Signup and view all the answers

What is the result of impaired immunity in older people?

Multiple micronutrient deficiencies (A) Signup and view all the answers

What is the term used to describe the loss of ability to produce endogenous antioxidants in older people?

Immunosenescence (C) Signup and view all the answers