Eating organic food will not make you healthier, according to researchers at Stanford University, although it could cut your {#blank#}1{#/blank#}(expose) to pesticides（杀虫剂）. They looked at more than 200 studies of the content and {#blank#}2{#/blank#}(associate) health gains of organic（有机的） and non-organic foods. Overall, there {#blank#}3{#/blank#}(be) no difference in the nutritional content, although organic food was 30% less likely {#blank#}4{#/blank#}(contain) pesticides.

    The researchers looked at 17 studies comparing people who ate organic {#blank#}5{#/blank#} those who did not and 223 studies {#blank#}6{#/blank#} compared the levels of nutrients, bacteria, and pesticides in various foods. However, none of the human studies ran for longer than two years, {#blank#}7{#/blank#}(make) conclusions about long-term{#blank#}8{#/blank#}(outcome) impossible. And all of the available evidence was{#blank#}9{#/blank#}(relative) weak and highly variable, which the researchers said was unsurprising because of all the different variables.

    Dr Crystal Smith-Spangler, the lead researcher, said “Some believe that organic food is always healthier and more nutritious. But as {#blank#}10{#/blank#} matter of fact there isn't much difference between organic and conventional foods, if you're an adult and make decisions based simply on your health.”

    Have you ever wondered{#blank#}1{#/blank#}children always seem to have bas of energy and never run out of steam? Researchers have discovered that children have levels of recovery of endurance athletes. In fact, scientists say children's muscles recover from "high-intensity exercise" a lot {#blank#}2{#/blank#}(quick)than athletes. A study looked at the performance levels of children when they were cycling, and compared their fitness to {#blank#}3{#/blank#} of athletes. Rwsearcher Dr Sebastien Ratel suggested they{#blank#}4{#/blank#}(find)the children used more of their aerobic metabolism and were therefore less tired during the high-intensity physical activities. The children also recovered very quickly—even faster than the well-trained adult endurance athletes.

    The researchers hope that{#blank#}5{#/blank#}(they)finding will help scientists have a better {#blank#}6{#/blank#}(understand) of how the human body changes with age. It could lead to advantages in the fight{#blank#}7{#/blank#}diabetes and other diseases. Dr Ratel said the research was{#blank#}8{#/blank#}(particular)important as more children were become less active. He warned." With the diseases related to physical inactivity{#blank#}9{#/blank#}(rise), know the changes with growth that might contribute to the risk of disease."{#blank#}10{#/blank#}is helpful for children to maintain their fitness as they grow up and play as much as they could so they renin healthy as adults.