Scientists say organic food is not necessarily healthier and safer

time:15-06-13 forum:Diet and nutrition
  http://www.cnbeta.com/articles/400517.htm



in recent years, many scientists use "no" directly. To answer this question. There seems to be little evidence that organic foods are more nutritious than ordinary foods.

2009, the British Food Standards Agency combed 67 studies on the subject, and did not find any difference in nutrition between organic and ordinary food. In 2012, a more large-scale assessment of 237 studies, published in the monthly journal of the chronicle of internal medicine, also found that organic food seemed healthier and safer than ordinary food.

but there has always been a disagreement. They believe that organic food is definitely good for health. An article published in the British Journal of nutrition in July 2014 again triggered a discussion on this issue. The researchers combed 347 previous studies and found that certain organic fruits and vegetables contained more antioxidants than ordinary fruits and vegetables.

unfortunately, this evidence is not strong enough. No one knows how much extra antioxidants actually do for your health. Because antioxidants must be absorbed by blood and transported to various organs, but little research on this aspect can prove this. Now, there is no evidence that organic food really brings any benefits.

at the same time, some commentators pointed out that this endless debate on health issues has become a pastime. According to Marion Snel of New York University, the most important reason for buying organic food is its environmental impact and production value. Any nutritional differences are "extra pleasant things" if they really exist.

other experts say that most Americans eat little fruit and vegetables, and this is a more pressing health problem than the small difference between organic and ordinary food. "In this discussion, everyone ignored the important fact that what consumers could do was to eat more fruits and vegetables than they were organic." Karl Winter of University of California Davies said. Winters are also skeptical about whether organic food is healthier.

anyone trying to compare "general" foods and "organic" foods will face a major obstacle: These are broad sense concepts.

in the United States, there is a clear dividing line between the two: a farm certified "organic" by the United States Department of agriculture prohibits the use of synthetic pesticides, fertilizers or sludge, and organic animals do not feed antibiotics or growth hormones.

, however, there is still a large variable space. Fertilizers and pesticides are widely used in some ordinary farms. But some farms have selective use of pesticides, or use other pest control techniques.

similarly, some organic farms use natural pesticides that are considered "organic", but they are also very toxic. Some organic farms also use fertilizers that contain more lead, cadmium and other pollutants than ordinary fertilizers. It all depends on the specific situation - there is no single "regular" planting method or single "organic" planting method.

in addition, there are many variables that can affect the nutritional value of crops, from soil types to climate conditions to crop varieties. It is extremely difficult to control all these factors to make detailed statements about "organic" and "regular" planting.

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