A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin caner, actually increases the risk．

　　Researchers from the University of lows based their firdings on a review of 18 earlier studies that looked at the associstion between sunscreen use and melanoms(黑素瘤)．They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma．

　　Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helpsprevent skin cancer, which is increasing in incidence(发生率)faster than any other cancer in the United States．

　　But questions have been raised about sunscreen and whether it may have the opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning．

　　The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin concer－people with fair skin and freckles(雀斑)，for example－are more likely to use sunscreen．As a result, it may appear that sunscreen users get cancer more often．

　　The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study．

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　　Anna Douglas was 72 years old when she started writing her newspaper column．She had been a school teacher before she retired(退休), but she needed to keep 　　1　　．She was even willing to work without pay．She then offered her 　　2　　 with a business that helped other businesses find jobs for old people．Every day she 　　3　　 other old folks like her．By talking with them, she 　　4　　 two things．Old people had abilities that were not 　　5　　．But old people also had some 　　6　　．She found a new purpose for herself then．

　　Through the years, she 　　7　　 to write stories about people for national magazines．There was now a new 　　8　　; old people tike herself．She began to write a newspaper column called“Sixty plus”, which was about 　　9　　 old．She writes about the problems of old people, especially their problems with being 　　10　　．

　　Anna Douglas uses her 　　11　　 ability to see the truth behind a problem．She understands 　　12　　 problems begin．For example, one of her 　　13　　 said that his grandchildren 　　14　　 the houses as soon as he came to visit．Mrs．Douglas 　　15　　 some ways for him to understand his grandchildren．

　　“It’s important to know 　　16　　 about your grandchildren’s world,”says Mrs．Douglas．“That means questioning and listening, and 　　17　　 is not what old people do best．Say good things to them and about them,”she continues．“Never try to 　　18　　 your grandchildren or other young people．Never 　　19　　 your opinion．Don’t tell them what they should do．　　20　　, they have been taught they should have respect for old people．The old should respect them as well．”

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