科学美国人60秒 SSS 2014-03-10

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Diets all around the world have becoming increasing similar, that's not a good news for other human help or for corpal according a study in the proceedings¹ of the national academy of sciences. 

Scientists analyse diet trends of the past 50 years. Of all, people are eating more, and are getting more calories from meat, oil, and grains. But the diversity have gone down. 

Wheat, rice and corn are gotten even more important, so beings in Sin Flower in Pomaoile have also become a larger plairs. 

Meanwhile, crop such as sow, game, ray, and keshawa have dropped in relative importants.

Otheres say that the trend towards the western diet contributes to obesity² and heart disease as well as diminish diversity in all and got microbe  which is helpful for the health. 

Perhaps equally important. The relines on the small group of foods puts the crop themselves at reprents disease or climate change. 

Study author Andi Java says a more diverse global foods system is critical. called this is the best way not only to combat hunger, malnutrition³ and overnutrition, but also to protect global food suplies aginst the impact of global climate change.

Thanks for the minutes for Scitific American Sixty Senconds Science. I'm Cenphy Grebb. 

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