organic food
TRANSCRIPT
Eating Organic:
A public health
necessity?Yana Puckett, MD
Steven Rose
Xiaoyu Zong
Introduction Regulations
Cost-effectiveness: Safe at any Price?
Health benefits?
Pesticides
Organic: Hype?
Genetically Modified, Irradiated
Politics
Labels
Future of Organic?
What is organic?
According to the United States
Environmental Protection Agency:
“"Organically grown" food is food grown and processed using no
synthetic fertilizers or pesticides. Pesticides derived from natural
sources (e.g., biological pesticides) may also be used in producing
organically grown food. Increasingly, some consumers are
purchasing organically grown and processed foods as a way to
reduce their exposure to synthetic pesticides and fertilizers.”
A Profitable Business
Regulation of Organic To be certified as 100% organic
Land usage
Management practices
Crop rotation practices
Pest control policies
Livestock origin, feed, healthcare, and living conditions
Prevent commingling of product
Certified Organic
Cost Effectiveness Must pay certification costs up to $2000 annually
Cost between 50-100% more than traditional farm products
EWG determined produce worth vs those not worth spending the extra money on.
2012 – $35 billion industry
Stanford study
Mandatory labeling
Health Benefits of Organic
Foods
More nutritional value
Claim: Pesticides may limit nutrition
absorption properties of produce
Benefits of no pesticides
What are phenols?
Cancer chemopreventive – flavonoids!
Capture free radicals before DNA
damage can occur.
Free-radical theory of aging
Data from “New evidence confirms the nutritional superiority of plant-based organic foods,” by Charles
Benbrook, et. al. The Organic Center, March 2008.
Factors that Affect Nutritional
Content
Vitamins and phytochemicals
Weather (affecting crops year-to-year)
Specific environmental conditions from
one farm to the next(microclimates)
Soil condition
Length of time the specific plots of land
had been worked using organic methods
Soil Quality and Style of
Farming
~Six recent studies of nutrient content of
organic tomatoes, only one showed no
significant differences between organic
and conventional farms (3).
Weather
Burbank tomato study.
Quercetin?
Kaempferol?
Pesticides
World pesticide use exceeded 5.0 billion
lbs in both 2000 and 2001. (5).
Both the amount of pesticide residue on
foodstuff and the amount released into
the atmosphere are factors that should be
considered when purchase organically
raised food.
Pesticides
Organic foods were much less likely than
non-organic produce (by a factor of 10)
to have two or more residues. (1)
Only 2.6% of organic foods had
detectable multiple residues compared
to 26% of conventionally grown foods. (6)
Pesticides
Organically raised foods had one-third
the amount of chemical residues found in
conventionally raised foods (1).
Compared to produce grown with
integrated pest management techniques,
the organic produce had one-half the
amount of residue (1),
Pesticide Residues Highest percentages of insecticide residue findings(6):
-celery (96%)-pears (95%)-apples (94%)-peaches (93%) -strawberries (91%)
-oranges (85%)-spinach (84%) -potatoes (81%)-grapes (78%)-cucumbers (74%)
Organic Farming Terms like “all natural,” “non-toxic,” “earth-
friendly,” or containing “natural botanicals,” but the ingredients list chemical after chemical.
At face value, these products look more natural. In reality, there is no regulating agency to verify whether any of the claims are true.
That means that marketing claims can be very misleading.
Organic Farming
Cruelty Free farming
Organic chicken
The Happy Egg company
http://youtu.be/AHsvetb6nXU
http://youtu.be/tloxthQu7vQ
Labeling: Beware!
Genetically Modified,
Irradiated
Antibiotic and virus resistance
Herbicide resistance
Scientific studies: no greater adverse health risk than conventional food (8-10).
Long term studies needed.
Regulation is questioned.
Future of Organic Food Community gardens
Healthy Living City Designs: Space for
community gardens and farmer’s
markets, especially low income areas.
Vertical farming
http://youtu.be/1clRcxZS52s
Community Gardens
Vertical Farming
Vertical Farming
Glass space, vertical + artificial lighting.
Ken Yeang and Dickson D. Despommier
Feeding the world in the 21st century
Eliminate world hunger
Proponents for Vertical
Farming
Preparation for future
Crop production year round
Protection of crops from pests and
weather
Animal extinction stopped
Methane energy production
Organic crops! Easier regulation! Impact
human health.
Criticism of Vertical Farming
Questionable profitability
Greenhouse gases
Water source depleted
Conclusion
Growing business, surpassed $13.8 billion
in 2005 (Organic Trade Assn. 2006).
Health benefits exist
If you can afford, buy! If not, no big deal!
Vertical farming
References 1 Baker BP, Benbrook CM, Groth E 3rd,Lutz Benbrook K. Pesticide residues in conventional, integrated pest
management (IPM)-grown and organic foods: insights from three US data sets. Food Addit Contam 2002;19:427-
446.
2 Chassy AW, Bui L, Renaud EN, et al. Three-year comparison of the content of antioxidant microconstituents and
several quality characteristics in organic and conventionally managed tomatoes and bell peppers. J Agric Food
Chem 2006;54:8244-8252.
3 Juroszek P, Lumpkin HM, Yang RY, et al. Fruit quality and bioactive compounds with antioxidant activity of
tomatoes grown on-farm: comparison of organic and conventional management systems. J Agric Food Chem
2009;57:1188-1194.
4 Mitchell AE, Hong YJ, Hoh E, et al. Ten-year comparison of the influence of organic and conventional crop
management practices on the content of flavonoids in tomatoes. J Agric Food Chem 2007;55:6154-6159.
5 Pesticides industry sales and usage. 2000 and 2001 market estimates.
http://www.epa.gov/pesticides/pestsales/01pestsales/market_estimates2001.pdf [Accessed October 23, 2014]
6 U.S. Food and Drug Administration. Pesticide residue monitoring program 2000.
http://www.fda.gov/Food/FoodborneIllnessContaminants/Pesticides/ucm125171.htm [Accessed October 23,
2014]
7 American Medical Association (2012). Report 2 of the Council on Science and Public Health: Labeling of
Bioengineered Foods
8 United States Institute of Medicine and National Research Council (2004). Safety of Genetically Engineered
Foods: Approaches to Assessing Unintended Health Effects. National Academies Press. Free full-text. National
Academies Press. See pp11ff on need for better standards and tools to evaluate GM food.
9 Key S, Ma JK, Drake PM (June 2008). "Genetically modified plants and human health". J R Soc Med 101 (6):
290–8. doi:10.1258/jrsm.2008.070372. PMC 2408621. PMID 18515776.