TED-Ed: How stress affects your brain - Madhumita Murgia

The video discusses stress, its effects on the brain, and how chronic stress can alter brain structure and function. It explains the role of the HPA axis and cortisol in stress response, and how high cortisol levels can damage the brain, leading to mental health issues. The video also covers epigenetic changes due to stress, which can be inherited. Finally, it suggests exercise and meditation as effective ways to reverse stress effects and improve brain health.

What is the role of cortisol in the body's response to stress?

• It primes the body for immediate action.

• It helps the body relax and sleep.

• It decreases the heart rate.

• It reduces the body's energy levels.

How does chronic stress affect the amygdala?

• It causes the amygdala to shrink.

• It has no effect on the amygdala.

• It increases its activity level.

• It decreases its activity level.

What part of the brain is associated with learning and memory, and is affected by chronic stress?

• Cerebellum

• Amygdala

• Prefrontal cortex

• Hippocampus

What are epigenetic changes in the context of stress?

• Changes that affect gene expression without altering the genetic code.

• Changes that alter the genetic code directly.

• Changes that only occur in the brain.

• Changes that are temporary and reversible.

Which activities are suggested to reverse the effects of cortisol on the brain?

• Eating and drinking

• Exercise and meditation

• Reading and writing

• Watching TV and sleeping