Sleepy High School Students

The Centers for Disease Control and Prevention recently conducted a study to help assess why there are so many sleep deprived high school students. In the survey, students were asked how much sleep they get on an average night. The most common answer indicated that not enough students get the proper amount of sleep. Prior studies have shown that those in their teens need on average nine hours of sleep per night. Eight hours of sleep is considered the borderline minimum for teens. The study found that most of the students got less than eight hours of sleep per night.

In a search for answers as to why high school students are so sleep deprived, researchers point to studies that suggest that computers may contribute to the problem. These studies have shown that the blue light emitted by computer screens may alter a person's internal biological clock.

Sleeplessness can be a serious condition. Without proper sleep, teens may have more trouble learning in school. This certainly does not help when studying for biology exams. Lack of sleep also contributes to poor judgment and even one night of not enough sleep can impair the body's chemical balance.

Are Antioxidants Always Good For Us?

A study reveals surprising evidence that antioxidants aren't always the panacea that we may think they are. While they have many positive benefits, recent studies at Kansas State University also suggest that they can cause harm in some circumstances. Too much of a good thing may be bad.

Scientists at the Kansas State University Cardiorespiratory Exercise Laboratory have studied ways to improve oxygen delivery to muscles during physical activity through the use of antioxidants. Steve Copp, a researcher in the lab states, "One of the things we've seen in our research is that you can't just give a larger dose of antioxidants and presume that there will be some sort of beneficial effect. In fact, you can actually make a problem worse." The researchers found that antioxidants can sometimes impair the function of muscles. Too many antioxidants can negatively impact the levels of oxidants, like hydrogen peroxide, which actually help to dilate blood vessels and increase blood and oxygen flow to muscles.

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