Ch. 14 - Stress & Health.

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Presentation transcript:

Ch. 14 - Stress & Health

You will find out about: Your stress response system Does money & optimism effect stress? How can you have better health & cope with stress?

Stress response system - fight or flight Walter Cannon With stress, the body prepares for fight or flight Adrenaline & noradrenaline (stress hormones) Heart rate and respiration increases Blood diverted from digestion to skeletal muscles Dulls pain Releases sugar for energy

Body’s General Adaptation Syndrome (GAS) Applies to all stress situations Phase #1 = Alarm Respiration increases Temperature increases Heart rate increases Blood diverted to skeletal muscles

General Adaptation Syndrome Phase #2 = Resistance Hormones (e.g. adrenaline) increase Phase #3 = Exhaustion Tiredness, More vulnerable to illness Mental breakdown Possibly death

General Adaptation Syndrome

Does control effect your reaction to stress? Rats receiving a shock (stress) with no control developed ulcers Rats that could turn off (control) the stress by turning a wheel did not develop ulcers Uncontrolled stress = ulcers

Control and stress

Does money effect stress? Wealthy (more control) = longer life Poor ( less control) = shorter life Be careful about cause and effect Wealthy can afford more health care and better foods

Does optimism effect stress? Yes Optimists perceive more control & cope better with stress

Hopelessness

Does a stressful personality type affect your heart? Type “A” Personality Hard driving, impatient, time sensitive, supermotivated, verbally aggressive and easily angered More prone to heart attacks Type “B” Personality Easy going and relaxed Less prone to heart attacks

Does stress cause cancer? Cancer rates are higher among widowed, divorced, or separated. Stress does not create cancer cells Stress weakens the body’s defenses

How can you have better health and cope with stress? (Summary) Aerobic exercise Biofeedback Meditation Social support

Aerobic exercise Helps reduce stress, depression and anxiety

Biofeedback Can help people relax by providing information about changes in muscle tension.

Meditation (Relaxation) Quiet time to relax and enjoy the tranquility Reduces the bad effects of stress such as headaches, hypertension, anxiety and insomnia

Social Support Being able to confide fears & frustrations to close friends will reduce stress. Happily married couples live longer

Are alternative medicines effective? E.g. Acupuncture, massage therapy, spiritual healing, herbal remedies, aromatherapy. The value of these remedies are often over estimated due to: Placebo effect (You get what you expect) Spontaneous remission (The body cures itself)

Smoking & health Smoking correlates with higher rates of depression, chronic disabilities (e.g. lung cancer) and divorce. More addictive than heroin or cocaine

Nutrition (You are what you eat?) Want to improve your concentration and alertness? Eat a (low-carbohydrate)high protein meal E.g. Meat, fish, chicken High carbohydrate meals (e.g. bread, potatoes, pastas) makes us feel sleepy and relaxed