keywords: slumber sleep drowsiness stress healthdaynews
text: Lost Sleep Leads to Health Problems Advice on how to get a good night's slumber and avoid future heart trouble    HealthDayNews -- Lack of sleep can cause more than drowsiness; it can contribute to a number of health problems.    Short-term effects of lack of sleep include increases in blood pressure and levels of stress hormones, according to an article in the August issue of the Harvard Heart Letter...