Stress is the body's reaction to any change that requires an adjustment or response. The body reacts to these changes with physical, mental, and emotional responses.
Stress is a normal part of life. Many events that happen to you and around you —and many things that you do yourself—put stress on your body. You can experience stress from your environment, your body, and your thoughts. The human body is designed to experience stress and react to it. Stress can be positive, keeping us alert and ready to avoid danger. Stress becomes negative when a person faces continuous challenges without relief or relaxation between challenges. As a result, the person becomes overworked and stress-related tension builds.
Stress that continues without relief can lead to a condition called distress -- a negative stress reaction. Distress can lead to physical symptoms including headaches, upset stomach, elevated blood pressure, chest pain, and problems sleeping. Research suggests that stress also can bring on or worsen certain symptoms or diseases.
Stress also becomes harmful when people use alcohol, tobacco, or drugs to try and relieve their stress. Unfortunately, instead of relieving the stress and returning the body to a relaxed state, these substances tend to keep the body in a stressed state and cause more problems.
✦ 43 % of all adults suffer adverse health effects from stress.
✦ 75% to 90% of all doctor's office visits are for stress-related ailments and complaints.
✦ Stress can play a part in problems such as headaches, high blood pressure, heart problems, diabetes, skin conditions, asthma, arthritis, depression, and anxiety.
✦ The Occupational Safety and Health Administration (OSHA) declared stress a hazard of the workplace.
✦ Stress costs American industry more than $300 billion annually.
✦ The lifetime prevalence of an emotional disorder is more than 50%, often due to chronic, untreated stress reactions.
✦ Your body is hard-wired to react to stress in ways meant to protect you against threats from predators and other aggressors. Such threats are rare today, but that doesn't mean that life is free from stress.
On the contrary, you undoubtedly face multiple demands each day, such as shouldering a huge workload, making ends meet, taking care of your family, or just making it through the morning rush hour. Your body treats these so-called minor hassles as threats. As a result, you may feel as if you're constantly under assault but remember: you do not have to let stress control your life.
If your mind and body are constantly on edge because of excessive stress in your life, you may face serious health problems. That's because your body's "fight-or-flight reaction" — its natural alarm system — is constantly on.
When you encounter perceived threats — a large dog barks at you during your morning walk, for instance — your hypothalamus, a tiny region at the base of your brain, sets off an alarm system in your body. Through a combination of nerve and hormonal signals, this system prompts your adrenal glands, located atop your kidneys, to release a surge of hormones, including adrenaline and cortisol.
Adrenaline increases your heart rate, elevates your blood pressure and boosts energy supplies. Cortisol, the primary stress hormone, increases sugars (glucose) in the bloodstream, enhances your brain's use of glucose and increases the availability of substances that repair tissues.
Cortisol also curbs functions that would be nonessential or detrimental in a fight-or-flight situation. It alters immune system responses and suppresses the digestive system, the reproductive system and growth processes. This complex natural alarm system also communicates with regions of your brain that control mood, motivation and fear.
The body's stress-response system is usually self-regulating. It decreases hormone levels and enables your body to return to normal once a perceived threat has passed. As adrenaline and cortisol levels drop, your heart rate and blood pressure return to baseline levels and other systems resume their regular activities.
But when the stressors of your life are always present, leaving you constantly feeling stressed, tense, nervous or on edge, that fight-or-flight reaction stays turned on. The less control you have over potentially stress-inducing events and the more uncertainty they create, the more likely you are to feel stressed. Even the typical day-to-day demands of living can contribute to your body's stress response.
The long-term activation of the stress-response system — and the subsequent overexposure to cortisol and other stress hormones — can disrupt almost all your body's processes.
⚠ Heart disease
⚠ Sleep problems
⚠ Digestive problems
⚠ Memory impairment
⚠ Worsening of skin conditions, such as eczema
⚠ Lower gastrointestinal functions
⚠ Lower immune reaction -> higher risk for infections
⚠ Lower sexual functions
Sources: MayoClinic, WebMD, WomensHealth.com