On just about any short list of how to prevent osteoporosis, you are likely to see the importance of calcium, Vitamin D, and regular exercise. But in some cases, devotion to working out - especially when paired with an overly stringent dietary regimen - can actually contribute to premature bone loss and even early osteoporosis, especially for women.
This issue has received increased attention in recent years as women's opportunities in high school and college sports have diversified tremendously. As more women than ever are committing to physical fitness and rigorous training routines, it sometimes becomes considered the norm to develop irregular periods or stop menstruating altogether.
While many women miss a period at some time or another, amenorrhea - or an absence of regular periods - may be a symptom that the body is undergoing an unhealthy process. Women athletes who do not eat enough to compensate for energy depleted in their workouts may not have sufficient bodil...
Sleep-wake syndrome - irregular
Signs and tests
People with irregular sleep-wake syndrome may have insomnia , excessive sleepiness, or both. Patients usually have at least three abnormal sleep episodes during a 24-hour period, but their total amount of sleep time is normal for their age.
If the diagnosis is not clear, your health care provider may prescribe a device called an "actigraph" for you to wear. This looks like a wristwatch, and can tell when you are sleeping or awake.
What we call normal rhythm is stimulated by a group of cells in the upper chamber of our heart called the atrium. This group of cells is in an area of the atrium called the sinus node and functions as a "natural pacemaker" stimulating the atria and then the ventricles of our heart to contract. In normal function (what doctors call normal sinus rhythm, generally with rates from 50 to 90 beats per minute in the resting individual), these cells can increase the rate due to activity (running, jumping, etc), increases in temperature, or many other things such as coffee or medicines. Sometimes however, a different area of the atria is irritable and escapes from the usual order of things, causing faster and less regulated rhythms. This sometimes causes us to notice “extra beats” or “skips” when we take our pulse. This is quite benign and doesn’t cause any problems. When the conditions are right for a problem however, these extra beats can “string together” and cause rapid regular fast heart ...
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