Course outline
Module 1
Module 1: Introduction to Stress and Ageing
Introduction to Stress and Ageing
Knowledge check
Q1. What is the primary focus of the study of stress and biological ageing?
- A. The impact of diet on physical health
- B. How stress affects the body\'s biological processes over time ✓
- C. The role of exercise in longevity
- D. The relationship between mental health and social relationships
Why: Stress and biological ageing primarily focus on how chronic stress influences cellular and physiological changes that contribute to ageing.
Q2. Which of the following is a key biological marker of ageing?
- A. Hair loss
- B. Telomere shortening ✓
- C. Weight gain
- D. Decreased vision
Why: Telomere shortening is a well-documented biological marker of cellular ageing.
Q3. What is the role of cortisol in the stress response?
- A. It decreases heart rate
- B. It increases alertness and energy ✓
- C. It promotes long-term memory
- D. It reduces inflammation
Why: Cortisol is a hormone released during stress that increases alertness and energy by mobilizing glucose and other resources.
Q4. Which part of the brain is primarily responsible for initiating the stress response?
- A. The hypothalamus ✓
- B. The cerebellum
- C. The hippocampus
- D. The amygdala
Why: The hypothalamus initiates the stress response by activating the hypothalamic-pituitary-adrenal (HPA) axis.
Q5. Which of the following is a common consequence of chronic stress on the body?
- A. Improved immune function
- B. Increased risk of cardiovascular disease ✓
- C. Enhanced cognitive function
- D. Lowered blood pressure
Why: Chronic stress is associated with an increased risk of cardiovascular disease due to prolonged activation of the stress response.
Module 2
Module 2: The Biology of Stress Responses
The Biology of Stress Responses
Knowledge check
Q1. What is the primary function of the hypothalamic-pituitary-adrenal (HPA) axis in response to stress?
- A. To increase heart rate and blood pressure
- B. To regulate the release of cortisol ✓
- C. To stimulate muscle growth
- D. To enhance immune function
Why: The HPA axis is primarily responsible for regulating the release of cortisol, which helps the body respond to stress.
Q2. Which hormone is most directly involved in the body's short-term stress response?
- A. Insulin
- B. Adrenaline ✓
- C. Testosterone
- D. Estrogen
Why: Adrenaline, also known as epinephrine, is released by the adrenal glands in response to short-term stress and prepares the body for a fight-or-flight response.
Q3. What is the role of the amygdala in the stress response?
- A. To regulate heart rate
- B. To process emotional reactions and trigger the release of stress hormones ✓
- C. To control digestion
- D. To store long-term memories
Why: The amygdala processes emotional reactions and plays a key role in triggering the release of stress hormones like cortisol.
Q4. Which of the following is a long-term effect of chronic stress on the body?
- A. Increased muscle strength
- B. Improved memory
- C. Weakened immune system ✓
- D. Enhanced vision
Why: Chronic stress can lead to a weakened immune system, making the body more susceptible to illness.
Q5. What is the primary function of cortisol in the stress response?
- A. To increase alertness and energy ✓
- B. To promote relaxation and sleep
- C. To reduce inflammation in the body
- D. To increase muscle mass
Why: Cortisol increases alertness and energy by mobilizing glucose and other resources in the body during a stress response.
Module 3
Module 3: Telomeres and Cellular Ageing
Telomeres and Cellular Ageing
Knowledge check
Q1. What are telomeres?
- A. Proteins that repair DNA
- B. Repeated DNA sequences at the ends of chromosomes ✓
- C. Enzymes that control cell division
- D. Hormones that regulate stress
Why: Telomeres are the repeated DNA sequences at the ends of chromosomes that protect them from degradation.
Q2. What is the primary function of telomeres?
- A. To increase cell division speed
- B. To protect chromosomes from damage ✓
- C. To produce energy for cells
- D. To regulate blood pressure
Why: The primary function of telomeres is to protect chromosomes from damage during cell division.
Q3. What enzyme is responsible for adding nucleotides to telomeres?
- A. RNA polymerase
- B. Telomerase ✓
- C. DNA ligase
- D. Lipase
Why: Telomerase is the enzyme responsible for adding nucleotides to telomeres, helping to maintain their length.
Q4. What happens to telomeres with each cell division?
- A. They become longer
- B. They remain the same length
- C. They shorten ✓
- D. They disappear
Why: Telomeres shorten with each cell division, eventually leading to cellular senescence.
Q5. How does chronic stress affect telomeres?
- A. It increases telomere length
- B. It has no effect on telomeres
- C. It accelerates telomere shortening ✓
- D. It repairs telomeres
Why: Chronic stress accelerates telomere shortening, contributing to cellular aging.
Module 4
Module 4: Chronic Stress and Health Outcomes
Chronic Stress and Health Outcomes
Knowledge check
Q1. Which of the following is a common long-term health outcome associated with chronic stress?
- A. Improved cardiovascular health
- B. Increased risk of hypertension ✓
- C. Enhanced immune function
- D. Reduced inflammation
Why: Chronic stress is associated with prolonged activation of the sympathetic nervous system, leading to increased blood pressure and a higher risk of hypertension over time.
Q2. What is the primary hormone released during the stress response that affects the body's metabolic processes?
- A. Insulin
- B. Cortisol ✓
- C. Adrenaline
- D. Estrogen
Why: Cortisol is the primary hormone released during the stress response and plays a significant role in regulating metabolism, immune function, and blood pressure.
Q3. Which of the following is a biological marker of aging that can be influenced by chronic stress?
- A. Muscle mass
- B. Telomere length ✓
- C. Hair color
- D. Height
Why: Telomere shortening is a biological marker of aging and can be accelerated by chronic stress, contributing to premature aging at the cellular level.
Q4. How does chronic stress affect the hippocampus in the brain?
- A. It increases its size
- B. It enhances memory retention
- C. It reduces its size and impairs memory ✓
- D. It has no effect on the hippocampus
Why: Chronic stress leads to the release of cortisol, which can damage the hippocampus, reducing its size and impairing memory and learning functions.
Q5. Which of the following is a psychological consequence of prolonged exposure to chronic stress?
- A. Increased self-esteem
- B. Improved emotional regulation
- C. Development of anxiety or depression ✓
- D. Enhanced problem-solving skills
Why: Prolonged exposure to chronic stress is strongly linked to the development of mental health conditions such as anxiety and depression due to ongoing physiological and psychological strain.
Module 5
Module 5: Inflammation and Ageing
Inflammation and Ageing
Knowledge check
Q1. Which of the following is a key characteristic of chronic inflammation associated with ageing?
- A. Short-term immune response
- B. Persistent low-grade inflammation ✓
- C. Increased tissue repair
- D. Reduced immune cell activity
Why: Chronic inflammation in ageing is often characterized by a persistent low-grade inflammatory state, which contributes to tissue damage and ageing-related diseases.
Q2. What is the primary role of cytokines in the context of inflammation and ageing?
- A. To promote cellular repair
- B. To signal immune cells and regulate the inflammatory response ✓
- C. To increase metabolic rate
- D. To reduce oxidative stress
Why: Cytokines act as signaling molecules that regulate immune responses and inflammation, playing a crucial role in both acute and chronic inflammatory processes.
Q3. Which of the following is a consequence of prolonged inflammation in the body?
- A. Improved cellular function
- B. Increased risk of age-related diseases ✓
- C. Enhanced tissue regeneration
- D. Reduced oxidative stress
Why: Prolonged inflammation is linked to an increased risk of age-related diseases such as cardiovascular disease, diabetes, and neurodegenerative disorders.
Q4. What is the term used to describe the accumulation of damaged proteins and organelles in cells, often associated with inflammation and ageing?
- A. Apoptosis
- B. Autophagy
- C. Senescence ✓
- D. Lysosomal dysfunction
Why: Cellular senescence refers to the state of irreversible cell cycle arrest that occurs with age and is often associated with the accumulation of cellular damage and inflammation.
Q5. Which of the following is a major source of chronic inflammation in older adults?
- A. Increased physical activity
- B. Dietary fibre intake
- C. Chronic low-grade infections and immune activation ✓
- D. Reduced body fat
Why: Chronic low-grade infections and persistent immune activation are significant sources of inflammation in older adults, contributing to the inflammageing phenomenon.
Module 6
Module 6: Lifestyle Interventions for Stress Reduction
Lifestyle Interventions for Stress Reduction
Knowledge check
Q1. Which of the following is a common lifestyle intervention for stress reduction?
- A. Increased alcohol consumption
- B. Regular physical exercise ✓
- C. Poor sleep hygiene
- D. Smoking
Why: Regular physical exercise is a well-documented lifestyle intervention that helps reduce stress and improve overall mental health.
Q2. What is one of the primary benefits of mindfulness meditation in stress reduction?
- A. Increased heart rate
- B. Improved emotional regulation ✓
- C. Higher cortisol levels
- D. Reduced oxygen intake
Why: Mindfulness meditation helps improve emotional regulation, which is a key factor in reducing stress.
Q3. Which of the following is a negative effect of chronic stress on the body?
- A. Improved immune function
- B. Enhanced cognitive performance
- C. Accelerated biological aging ✓
- D. Increased bone density
Why: Chronic stress is associated with accelerated biological aging due to its impact on telomeres and cellular health.
Q4. What is a recommended dietary approach for stress reduction?
- A. High intake of processed foods
- B. Balanced diet rich in fruits and vegetables ✓
- C. Excessive caffeine consumption
- D. Low protein intake
Why: A balanced diet rich in fruits and vegetables supports overall health and helps manage stress effectively.
Q5. How does social support influence stress levels?
- A. It increases stress levels
- B. It has no effect on stress levels
- C. It reduces stress levels ✓
- D. It causes emotional distress
Why: Social support is known to reduce stress levels by providing emotional comfort and practical assistance during challenging times.
Module 7
Module 7: Measuring Biological Age
Measuring Biological Age
Knowledge check
Q1. What is a common method used to measure biological age?
- A. Heart rate
- B. Telomere length ✓
- C. Blood pressure
- D. Body weight
Why: Telomere length is a well-established biomarker of biological age, as telomeres shorten with age and cellular stress.
Q2. Which of the following is NOT a biomarker of biological ageing?
- A. Inflammation markers
- B. Cognitive function ✓
- C. DNA methylation
- D. Telomere length
Why: While cognitive function can be affected by ageing, it is not a direct biomarker of biological age itself.
Q3. What does the term 'biological age' refer to?
- A. Chronological age
- B. A measure of how old a person's body appears compared to their chronological age ✓
- C. The age of a person's parents
- D. The age of a person's children
Why: Biological age refers to how old a person's body appears to be compared to their actual chronological age, based on various biological markers.
Q4. Which of the following is a technique used in DNA methylation clocks to estimate biological age?
- A. PCR
- B. Epigenetic profiling ✓
- C. X-ray imaging
- D. MRI
Why: DNA methylation clocks use epigenetic profiling to estimate biological age by analyzing changes in DNA methylation patterns over time.
Q5. What is one of the main factors that can accelerate biological ageing?
- A. Regular exercise
- B. Chronic stress ✓
- C. Adequate sleep
- D. Balanced diet
Why: Chronic stress is a significant factor that can accelerate biological ageing by increasing inflammation and cellular damage.