Word: brained
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...damaged heart tissue. The results were encouraging, but researchers don't know whether the stem cells transformed into new heart muscle, increased blood-vessel formation or somehow coaxed existing heart cells to become more active. Researchers are finding new sources of adult stem cells, including fat cells, skin, the brain and periodontal ligaments, the fibrous tendons that hold teeth in their sockets...
...some people hopelessly addicted to cigarettes, while others can seemingly quit at will? It may be, suggests recent research, that in those unlucky individuals who appear to be "born to smoke," nicotine triggers a pattern of brain activity that makes kicking the habit practically impossible. This strong neurobiological reaction to nicotine appears to be associated with hostile personalities marked by anger, aggression and anxiety...
Though they happen in the brain, strokes are a lot like heart attacks; the same risk factors that lead to a coronary can increase the risk of a clot-based stroke. One common factor, which doubles the risk of stroke, is metabolic syndrome, a condition marked by such abnormalities as high levels of glucose and triglycerides, low levels of good cholesterol, and high blood pressure. Being overweight is another, according to Swedish scientists, who found that heavy middle-aged men had twice the risk of a stroke. Not surprisingly, cholesterol-lowering statins developed for heart patients also work for stroke...
...taking a sugar pill can make you feel better, it must be all in your head, right? There's some truth to that, it turns out. Using an imaging technique that maps differences in blood flow in the brain, researchers were able to watch the placebo effect in action. Subjects were given harmless but painful electric shocks and then given a cream they were told would provide relief but actually contained no active ingredients. After the bogus salve was applied, scans showed that nerve activity in the brains of volunteers visibly changed. Regions involved in easing pain became more active...
...clear about what its yard markers are. A reading of 120/80 or below is considered normal; 140/90 marks the onset of hypertension; 160/100 is Stage 2 hypertension; 220/120 is the onset of what is known as malignant hypertension, pressure so high that fluid is squeezed from vessels into the brain and blood leaks out of capillaries into the liquid that fills the eyeballs. "Malignant hypertension is a medical emergency," says cardiologist Richard Devereux of Cornell University Medical College...