The
organic industry is hot; it's the fastest growing sector of the supermarket,
increasing in sales from $3.6 billion to $24.4 billion between the years of
1997 to 2011. The topic of organic foods has received even more attention
recently in response to a study released from Stanford University in September
2012, which concluded that there isn't much difference between organic and
conventional foods.
The study set off a firestorm of dialogue among both consumers and nutrition
professionals, as they discussed a larger meaning of whether choosing organic
foods is the best strategy for your health, as well as for the environment.

Debate on Nutritional Payback
The Stanford researchers reviewed a collection of about 240 previously
published studies, developing a statistical compilation of these findings. The
studies they examined were performed over multiple years and took into account
the nutrient and bacterial, fungal, or pesticide contamination levels in
various foods, such as fruits, vegetables, grains, meats, milk, poultry, and
eggs, as well as its impact on humans.
For most vitamins and minerals, no significant difference between organic and
conventional produce was found in nutrient content, with the exception of
phosphorous, which was higher in organically grown varieties. Yet, researchers
did find organic produce to have a 30 percent lower risk of pesticide
contamination, and organically farmed chicken and pork to have lower levels of
antibiotic-resistant bacteria.
Despite these findings, other studies have documented health and environmental
advantages of organic foods compared to their conventional counterparts. A
similar analysis of studies conducted by researchers at Newcastle University in
England found higher levels of vitamin C and phenols (plant antioxidants) in
organically grown crops.
In a study published in the March 2012 issue of the Journal of Agricultural and
Food Chemistry, which examined the effects of organic and conventional cropping
systems for spinach, researchers found the organic variety to have higher
levels of certain flavonoids and vitamin C.
Beyond Nutrition
One of the main attractions for eating organic goes beyond increased nutrient
content to lowering one's exposure to pesticide residues.
"Don't buy organics to increase phytochemical intake, but (buy them) because
organics generally have lower levels of pesticides," urges Alyson
Mitchell, Ph.D., professor and food chemist at the University of
California-Davis.
A study
published in Environmental Health Perspectives detailed a dramatic and
immediate protective effect against exposure to pesticides among 23 elementary
school children who participated. They were fed organic food items as
substitutes for the conventional foods in their diet.
"Although the FDA assures that pesticide residue on individual food
samples are within safe limits, what we do not know is how that cumulative load
of organophosphorous pesticides affects children, pregnant and breastfeeding
women and seniors," says Angie Tagtow, M.S.. R.D., L.D., dietitian and
owner of Environmental Nutrition Solutions, LLC, a company that focuses on
environmental approaches to food and nutrition.
Impact on Mother Earth

The organic food movement also takes into consideration how agricultural
practices affect the environment. The Rodale Institute's Farming Systems Trial
is the longest-running U.S. study to compare conventional and organic
agricultural practices. The project found that organic farming uses 45 percent
less energy, produces 40 percent less greenhouse gas emissions, and better
supports soil organic matter compared to conventional systems.
Additional evidence-based studies indicate organic farming methods create
healthy soils, which yield crops that are consistent with, or better than,
those grown by conventional agricultural methods.
Cost Comparison
Sure, organics may have some documented benefits, but are they worth the
additional dollars? To help you gauge the price vs. benefit, here's a look at
the average cost-breakdown for four commonly consumed foods:
Apples (per fruit): organic, $2.35; conventional, $1.34
Canned black beans (per 15-ounce can): organic, $1.77; conventional, $1.16
Eggs
(per dozen): organic, $4.79; conventional, $2.65
Boneless, skinless chicken breast (per pound): organic, $8.63; conventional,
$3.49
(Note:
Cost analysis calculated from average priced of products in three popular
supermarkets in Los Angeles County, California)
Organic Food Considerations:
Consider these factors when deciding whether to go organic in these food
categories:
1.
Fruits and vegetables. When it comes
to eating your daily quota of fruits and vegetables, it may be best to start at
square one by simply focusing on increasing your daily intake. According to a
2010 report released by the National Fruit and Vegetable Alliance, only six
percent of people are eating enough vegetables and only eight percent are
eating enough fruit each day.
2. Junk foods. When health is a
priority, it's important to keep in mind the type of food eaten, not just the
farming or production method it undergoes.
Surveys continually report that consumers believe organic food--regardless of
its ingredients--is nutritionally superior to conventional foods. Spending your
money on low-nutrient organic junk foods, such as cookies, chips and sugary
beverages is not the best use of your organic dollars.
3. Dairy. Because of organic
regulations, organic dairy farmers are prohibited from using antibiotics or
synthetic hormones, including the artificial growth hormone rBST or rBGH, and
cows must feed on organic pasture at least four months out of the year; organic
pasture has been associated with higher omega-3 fatty acid content in milk,
which have been linked to protection against heart disease and cognitive
decline.
4. Meat. Like organic dairy, animals
used for the production of organic meat cannot receive synthetic hormones or
antibiotics. The less-confined organic cows on organic farms are given space to
roam freely, reducing their potential to contract disease, which also gives the
meat a better fatty acid profile than animals living in confined spaces.
WHAT DOES IT MEAN TO BE CERTIFIED
ORGANIC?
The U.S. Department of Agriculture mandates the regulations behind any food
with the "organic" label by using a third party certification system.
According to the USDA, organic foods support biologic diversity and ecological
balance by fostering a system of recycling resources and nutrients into the
soil. Organically labeled foods restrict the use of synthetic fertilizers,
pesticides, growth hormones, antibiotics, and genetically-modified organisms
(GMOs) and prohibit the use of sewage sludge.
This
article was written my McKenzie for the January 2013 issue of Environmental
Nutrition.