CHICAGO- Have you ever worked on your laptop computer with it sitting on your lap, heating up your legs? If so, you might want to rethink that habit from now on. Doing it a lot can lead to “toasted skin syndrome (症状)”, an unusual-looking spotted skin condition caused by long-term heat exposure (暴露), according to medical reports.

       In one recent case, a 12-year-old boy from California developed a skin discoloration on his left lap after playing computer games a few hours every day for several months. “He recognized that the laptop got hot on the left side; however, he did not change its position,” Swiss researches reported in an article published Monday in the journal Pediatrics.

      Another similar case is a Virginia law student who needed treatment for the spotted darkening on her leg. Dr. Kimberley Salkey, who treated the young woman, learned the student spent about six hours a day working with her computer placed on her lap. As Dr. Salkey later learnt, the temperature under the laptop could reach 51 degrees. That case, from 2007, is one of 10 laptop-related cases reported in medical journals in the past six years.

The condition can also be caused by overuse of heating pads (垫子) and other heat sources that usually aren't hot enough to cause burns. It's generally harmless but can also cause such permanent (永久的) skin darkening. In very rare cases, it can cause damage leading to skin cancers, said the Swiss researchers, Drs. Andreas Arnold and Peter Itin from University Hospital Basel. They do not mention any skin cancer cases linked to laptop use, but suggest, to be safe, placing a carrying case under the laptop if you have to hold it on your lap.

      Dr. Kimberley Salkey said that under the microscope, the affected skin is similar to skin damaged by long-term sun exposure.

      Major producers including Apple and Dell warn against placing laptops on laps or exposed skin for long periods of time because of the risks for burns. In the past, “toasted skin syndrome” has happened to workers whose jobs require being close to a heat source, including bakers and glass blowers, and in people who gathered near hot stoves to stay warm.

Dr. Anthony J. Mancini, chief at Children's Memorial Hospital in Chicago, said that it's unlikely that computer use would lead to cancer since it's so easy to avoid close skin contact (接触) with laptops.

Jamie Oliver is a lively young British cook. He loves to teach people his 1 of cooking and eating. In his first television show, Oliver taught everyone to make 2 but delicious food. In Jamie's Kitchen, he taught young people 3 to cook. His next show, Jamie's School Dinners, is about 4 the foods that students eat.

Oliver saw that some schools in Britain were serving junk food—food that is easy to eat but unhealthy. 5 it can be delicious, junk food is not very good for children, and it is sometimes harmful to their health, because it doesn't give them the 6 they need at school. They sometimes can't think well or feel down, 7 they sometimes put on much weight. Some of the junk food that Oliver wants to change is canned spaghetti, chicken nuggets, French fries and soda. He 8 schools to serve fresh and healthy meat, vegetables and fruits. He helps the school cooks to make healthy dinners without junk food.

People liked Oliver's 9 of bringing quality food to schools. Thousands enjoyed his television show. However, Oliver wanted them to do more than just 10 . At his Feed Me Better website, he 11 over 270,000 signatures (签名) from people. They wanted to stop junk food and put healthy food in schools again.

Oliver sent all the 12 to British Prime Minister. The Prime Minister 13 to help change the school kitchens, teach school cooks to make healthy food, and spend 14 on school dinners. 15 James Oliver, students everywhere in Britain can enjoy more healthy dinners. Let's eat healthily, live well.

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