Today, the nutritional content of fruits and vegetables in the past, and human health has been affected. Head and large agricultural products usually contain more “dry”, this material will be produced together dilute the effect of mineral composition, the so-called “dilution effect.” In other words, the cultivation of fruits and vegetables, smaller individuals tend to contain more nutrients.

the United States, “Horticultural Science” published an article, said today in almost any market, the sale of vegetables and fruits, their nutrition, especially mineral content than 50 years ago, a similar harvest crops reduced by 5% to an average of 40%. These minerals, including magnesium, iron, calcium and zinc.

reason: tall big “dry matter” more

study found that modern mineral content of fruits and vegetables harvested more than 50 years ago, the average reduction of similar crops 5% to 40%. Head and large agricultural products usually contain more “dry”, this material will be produced together dilute the effect of mineral composition, the so-called “dilution effect.” In other words, the cultivation of fruits and vegetables, smaller individuals tend to contain more nutrients.

two reasons: the blind pursuit of production

modern agricultural production methods on the yield of the pursuit adversely affect the nutrition of crops, mainly in the nutritional diversity restrictions on. From 2000 to 2001, the South Carolina to increase the output of broccoli, select only a single high yield varieties planted, resulting in broccoli whole protein, amino acids and mineral content of up to 6 down.

as nearly 90% of the “dry” is a carbohydrate, select varieties with high yield of vegetable cultivation, the main effect is to improve the products of carbohydrates, there is no guarantee that a host of other nutrients and Thousands of phytochemicals to increase as the proportion of increased output.

Reason Three: The industrial production of harmful nutrients

in crop cultivation process, there is increasing use of fertilizers and pesticides, so the modern crops harvest time faster than ever before. However, the “mature” means that crops do not have enough time to absorb from the soil nutrients such as the environment, while the NPK fertilizer, “K” often impede absorption of nutrients in crops.

as fruit and vegetable nutrient content is lower than before, we may increase the number of consumption. Such as before eating a tomato and vitamin intake, and now have to eat a kiwi fruit can also add on; original pound of green vegetables contain chlorophyll, calcium, minerals and other nutrients, may now need a couple of pounds to make it up even half kilogram.

(taken from the New Zealand English “Herald” of: fresh air)