The Internet plays a big part in human life. We use it for work and pleasure. We use it to learn a new language. We find advice on it. We use it to connect with family and friends. We use it to stay in touch with events we care about. The list goes on and on.
As far as the Internet being a part of our lives, well, that train has left the station. There is no going back to an Internet-free life. But can using the Internet too much be bad for our health? It might be, say researchers. A new study finds that heavy Internet use may be connected to high blood pressure in a young group: teenagers.
The study results show that teens who spend at least 14 hours a week only online may cause high blood pressure, which makes their hearts and blood vessels (血管) work too hard. Over time, this extra pressure increases the risk of a heart attack. High blood pressure can also cause heart and other diseases.
The Henry Ford Hospital in Detroit, Michigan did the study. 335 young people, from 14 to 17 years old, took part in it. 134 of the teens were described as "heavy Internet users". And researchers found that out of these 134 teens, 26 had high blood pressure. The researchers said the study was the first to connect heavy Web use with high blood pressure.
The lead researcher is Andrea Cassidy-Bushrow. She says, "Using the Internet is part of our daily life, but it shouldn't ruin (毁坏) us." Ms. Cassidy-Bushrow adds that it is important for teens to stop to have a rest regularly(有规律地) from their computers or smartphones and do some kind of physical activity. She also suggests that parents shouldn't let their children use the Internet for more than two hours a day, five days a week.
