Monthly Archives: September, 2012
After years of having it drilled into their heads, most people now know that LDL (low-density lipoprotein) is the “bad” cholesterol package that increases the risk of cardiovascular disease, and HDL (high-density lipoprotein) is the “good” type that helps reduce it by removing cholesterol from artery walls. So if your HDL number is high, you’ve probably patted yourself on the back; if it’s low, you may have tried to raise it by, for instance, exercising more, losing weight, drinking a daily glass of wine, or even taking medication, such as high-dose niacin.
Twenty years ago there were concerns about electromagnetic radiation from old-fashioned computer monitors, so much so that many experts suggested sitting at least an arm’s length away. That’s no longer an issue with today’s computers. But the LED backlit screens now on most computers, including tablets (such as the iPad and Kindle Fire) and smartphones, as well as many flatscreen TVs, emit something else, albeit of lesser concern: blue light. As people spend more and more hours using these devices, especially at night, the blue light may interfere with their sleep.