Vegetables, fruits, and grains are a major source of vital nutrients, but centuries of intensive agriculture have depleted our soils to historic lows.
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This is a matter for serious concern, since poor nutrition has been linked to myriad health problems including cancer, heart disease, obesity, high blood pressure, and diabetes.
As a result, the broccoli you consume today may have less than half of the vitamins and minerals that the equivalent serving would have contained a hundred years ago.
Vegetables, fruits, and grains are a major source of vital nutrients, but centuries of intensive agriculture have depleted our soils to historic lows