Study Shows Stress Increases Health Risks

Document details
Category: Healthcare and Medicine Essay
Subcategory: Wellness Exercise and Nutrition
Words: 448
Pages: 1

WHAT IS STRESS? Stress is a combination of responses in the body. Stress can be short-term (acute) or chronic. Acute stress is the "fight or flight" response. If a car is careening toward you at a high rate of speed, you will (or should!) experience acute stress. It is when you experience so many common stressors, such as heavy traffic, noise, money worries, illnesses, relationship problems, rising crime rates, or work frustrations, that stress takes a chronic form. In the short term, stress can be vital. Over time, it turns destructive. How destructive can stress be on your body? Research has shown that prolonged stress can produce actual tissue changes and organ dysfunction. With the new MRI (magnetic resonance imaging) techniques, scientists are able to prove visibly that chronic stress can SHRINK an area in the brain called the hypothalamus. Read More On This They have found that the brains of war veterans, as well as women who have been victims of childhood sexual abuse, have a marked reduction in the size of their hypothalamus. Stress also affects your brain by releasing powerful chemical messengers called neurotransmitters, such as dopamine, norepinephrine, and epinephrine (also called adrenaline). The hypothalamicpituitary-adrenal portion of your brain releases steroid hormones, including the primary stress hormone, cortisol. Cortisol affects systems throughout your body, including an increased heart rate. Your heart, lungs, and circulatory system are influenced by the increased heart rate. Blood flow may increase 300 to 400 percent. Blood pressure increases and breathing becomes rapid. Your mouth and throat may become dry. Skin may become cool and clammy because blood flow is diverted away so it can support the heart and muscle tissues. Even digestive activity shuts down. Once again, occasional stress is normal. Once you've handled the situation, the stress goes away and you heal from the episode. But, if stressors accumulate over time, eventually the body becomes inefficient at handling even the least...

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