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Stress and Anxiety

Stress is a natural part of modern life.

Frequently Asked Questions

  • 1What causes Stress and anxiety?
  • 2What causes the disorders?
  • 3How does stress activate the systems in the brain that help regulate bodily functions?
  • 4What role does Glucocorticoids play with Stress?
  • Stress is a natural part of modern life. Caused by traffic, work deadlines, stress at home etc.
  • It has been found that exposure to stress early in life may cause vulnerability to stress and anxiety.
  • There is a molecular, cellular and structural differences in the brain of someone, with an anxiety disorder.
  • Lack of Sleep- Read more about Sleep Studies on Sleep Renewal 
  • Disorders are caused when the brain does not produce enough brainwaves, as they get out of balance due to stress, information overload, or illness etc.
  • 1. Voluntary nervous system:
  • Sends a message to the muscles for us to respond to sensory stimulation.
  • Example – If you see a shark in the water, your first reaction would be to run away as fast as possible.

2. Autonomic nervous system:

  • Made up of the sympathetic and parasympathetic nerve branches
  • Sympathetic branch – causes arteries that send blood to the muscles to relax in order to increase the blood flow, for allowing a better reaction.
  • The stress hormone adrenaline is released into the bloodstream, this helps to put the body into an arousal state to help cope with the challenge.
  • Parasympathetic branch – helps regulate bodily functions and relax the body once the stress has passed.
  • When these functions are left unchecked, disease could develop.

3. Neuroendocrine system:

  • Maintains the body’s internal functioning
  • Adrenaline travels through the blood and stimulates the release of the other hormones that affect the metabolic rate and sexual function.
  • Signals are sent to the hypothalamus in the brain, where the adrenal gland excrete glucocorticoids, these are hormones that produce the many affects in response to stress.
  • This includes storing energy in the blood
  • Increasing heart rate
  • Delaying the processes in the body that are essential during a crisis – eating, digestion, growth and reproduction.
  • Glucocorticoid cortisol, promotes energy replenishment and efficient cardiovascular function.
  • Cortisol levels peak in the morning hours just before you wake, and helps to turn on appetite and physical activity.
  • Acute stress enhances the memory of past threatening events that increase activity of the immune system, which protect the body from pathogens.
  • Glucocorticoids help the body respond to stress.
  • Also helps the body with environmental change.
  • Thus glucocorticoids are essential for survival.


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