Apparently vegetables from supermarkets are have less nutrients than they had even 50 years ago. The article covered what Davis wrote in his 2009, Journal of HortScience, article - but having read Taubes - I needed more information/documentation to make sure it wasn't just this one off scientist saying the sky is falling. (see below - while there is quite a lot of references to Davis' work, there are quite a few other studies done that appear to validate his theory).
You can read the information for yourself... but here are the highlights:
- due to mass production of farming, we are producing more food with less nutrients in them
- chemical fertilizers - which organic farmers don't use - grow plants faster and so they are less nutritious than organic foods
- heirloom foods tend to have higher nutrients because they have not been mucked around with as much as "normal" vegetables / fruits
- the earlier a fruit / vegetable is picked and the longer it is stored, the more vitamins and minerals it looses
- chicken has "twice as much fat as in 1940, a third more calories and a third less protein" (easy reads #3) - this is entirely based on what it eats and the fact that it is cooped up without access to the outdoors. Another reason to buy free range, organic.
I realize that organic, heirloom, free range, grass fed / grass finished is more expensive and hard to find - but don't you think it is so much more worth while to eat something that nourishes your body? I'd rather eat a small good meal than a large crappy one. But, buffets wig me out on a lot of different levels - germaphobe that I am. :)
------------------------ More info ----------------
Easy reads:
- Declining Fruit and Vegetable Nutrient Composition: What Is the Evidence?
- CHARTS: Nutrient Changes in Vegetables and Fruits, 1951 to 1999
- It's supposed to be lean cuisine. So why is this chicken fatter than it looks? (This was a odd ball find - but I couldn't resist putting it in the blog. I figure I wouldn't be able to do so for another posting...and it was just too good not to pop it in)
- Fruits and vegetables aren't what they used to be
- Declining Nutritional Value of Produce Due to High Yield Selective Seed Breeding.
- Critical Issue Report: Still No Free Lunch
- Declining Fruit and Vegetable Nutrient Composition: What Is the Evidence? - this has the full article by Davis with the graphs and additional documentation.
- Effect of agricultural methods on nutritional quality: a comparison of organic with conventional crops.
- Comparison of the Total Phenolic and Ascorbic Acid Content of Freeze-Dried and Air-Dried Marionberry, Strawberry, and Corn Grown Using Conventional, Organic, and Sustainable Agricultural Practices
- FOCUS ON ORGANIC FOOD QUALITY - FEEDING TRIALS
- Characterization of soil quality: Physical and chemical criteria
- Soil fertility management and insect pests: harmonizing soil and plant health in agroecosystems
- istorical variation in the mineral composition of edible horticultural products.
- Agriculture and Climate Change: Real problems, false solutions
- Trade-offs in Agriculture and Nutrition
- Influence of Organic versus Conventional Agricultural Practice on the Antioxidant Microconstituent Content of Tomatoes and Derived Purees; Consequences on Antioxidant Plasma Status in Humans
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