Great Women in Medicine Rachel Carson

by Jeffrey Dach MD

Although Rachel Carson was a marine biologist, I believe she deserves recognition as one of the “Great Women In Medicine” .  I will explain why.

Her landmark book, “Silent Spring”, is credited with motivating the government to create the Environmental Protection Agency in 1970 and the banning of DDT in 1972, both of which had enormous health benefits for the population.  (1)(2)(3)(4)(5)(28)

Left Image: Rachel Carson Courtesy of Wikimedia Commons

The title “Silent Spring”, refers to the mass extermination of the bird population from indiscriminate spraying of DDT over the fields.  The songbirds died from eating DDT laden insects.

Rachel Carson died from breast cancer in 1964 and was posthumously awarded the Presidential Medal of Freedom by Jimmy Carter in 1980. The Post Office in Rachel Carson’s home town, Springdale, Pennsylvania, was named in her honor on May 27, 2008.

The History of DDT and the Chemical Industry

The post-war era of the nineteen forties and fifties saw massive expansion of manufacture and sale of chemical pesticides such as DDT.   These chemical agents were considered safe, and DDT was indiscriminately sprayed from passing trucks and planes onto agricultural fields and residential areas.

Above Left Image Silent Spring,Book Cover by Rachel Carson, 1962.

At the same time, there was hysteria arising from the polio epidemic, and the media falsely spread the misguided notion that using DDT to kill insects somehow prevented the spread of polio.  DDT can not prevent polio.  See this 1946 newsreel documenting the misguided spraying of DDT in San Antonio Texas ordered by Heath Dept. director Mr.Crittenden, May, 1946 in an ill-fated attempt to wipe out polio. Many other cities joined in, like Rockford, Illinois, and Paterson, New Jersey.

The Power of the Mass Media

The mass media and government in league with the chemical industry lulled the complacent population into a sheep-like acceptance of these poisons.   See video below:

Fighting the Chemical Industry

Rachel Carson bravely took on the entire Chemical Industry who fought back by hiring their own “experts”, goons with scientific credentials, to attack her work.  The attacks back fired, providing even more media attention to her work and the health dangers of pesticides.

Magnified Effects Moving Up the Food Chain

Rachel Carson brought to public attention the fact that pesticides sprayed on our food supply move right up the food chain to us humans where they build up in the tissues of the body causing hormonal disruption, toxic effects on the nervous system and increased cancer risk.(28)

One should notice that the chemical structure of DDT is very similar to DES (Diethylstilbestrol), a synthetic estrogen which was banned because it causes cervical cancer in the daughters of women given DES during pregnancy. (11) (12) (12a) (13)

DDT was banned in 1972, and DES was banned in 1971. The Silent Spring Institute continues the legacy of Rachel Carson, and has focused on chemicals in the environment which cause breast cancer as hormonal disruptors and neurotoxins. (14)

Above Image: Activist and author Rachel Carson, whose book “Silent Spring” led to a study of pesticides, testifies before a Senate Government Operations Subcommittee in Washington, D.C. on June 4, 1963. Carson urged Congress to curb the sale of chemical pesticides and aerial spraying. (AP Photo)

The Breast Cancer-Pesticide Link

In 2007,  178,480 women were diagnosed with breast cancer and 40,460 women died of breast cancer in the US. (6)(7)(8).  Considerable study has been devoted to proving a link between pesticides and breast cancer. Could there be such a link ? (31,32)

Pesticides Banned in Israel and Breast Cancer Rates Fall.

The answer is yes. The pesticide-breast cancer link was clearly shown in research from Israel which linked three pesticides found in dairy products to increased cancer in mice. After a public outcry in 1978, the Israeli government was forced to ban the three pesticides, Benzene Hexachloride, DDT, and Lindane .

After the banning of these pesticides in Israel, breast cancer mortality rates (which had increased every year for 25 years), dropped nearly 8 per cent for all age groups and dropped more than a thirty-three percent for women ages 25-34 in 1986. (9) (10)

Endocrine Disruptors

Thanks to efforts made by Rachel Carson, the Silent Spring Institute, and others, the EPA has banned the following endocrine disruptor chemicals: PCBs, chlordane, DDT, aldrin, dieldrin, endrin, heptachlor, kepone, toxaphene, and 2,4,5-T . (15)

Rachel Carson’s work reminds us to avoid these toxic chemicals and hormone disruptors. By doing so, we may reduce the risk of breast cancer, and neurodevelopmental abnormalities in children. (28)

Watch this inspiring video documentary on Rachel Carson:

Our Stolen Future

Other scientists such as Theo Colborn have continued Rachel Carson line of investigation with the book, Our Stolen Future,  which describes in detailed scientific terms the effect of endocrine disruptor chemicals on the developing fetus of animals in the wild as well as in us humans. (16) (17) (18)

One example from Theo Colborn’s book describes infertility caused by pesticides in Florida Alligators, attributed to DDT and other pesticides dumped into the Everglades and detected in the egg shells. (19) (20)

Endocrine Disruptor Chemical BPA Causes PCOS

A major cause of infertility is PCOS, Poly Cystic Ovary Syndrome.  PCOS has been linked to neonatal exposure to the endocrine disruptor chemical BPA (Bisphenol-A) causing the the increasing epidemic of PCOS affecting 10-20% of the female population. In experimental animals, neonatal exposure to BPA (Bisphenol-A) results in a PCOS-like syndrome.  In addition, there is elevated BPA levels in PCOS patients.  For more on this see my  article: PCOS, BPA and Endocrine Disruptors.

Ten Ways to Reduce Your Exposure to Chemicals and Decrease Cancer Risk (19)

1. Use glass containers instead of plastic containers.

2. Avoid dry cleaning services.  The smell of dry cleaning comes from residues of perchloroethylene (PERC).

3. Avoid Pthalates, endocrine disrupting compounds that have been associated with cancer, impaired fertility, and male birth defects. Pthalates are found in hundreds of products including shampoo, lotion, perfume, cosmetics, vinyl and plastics, including toys.

5. Go Organic to reduce your exposure to pesticides.

6. Down the Drain.  Never put cleaning solvents, pesticides, paint thinners, automobile oil, or gas down a drain.  These pollute the environment.

7. Vacuum cleaners?. Vacuums with HEPA filters are best to avoid recycling dust back into the air.

8. Flame Retardants ? Look for furniture without PBDEs. PBDEs  flame retardants in polyurethane foam They are endocrine disruptors that affect thyroid hormones.

9. Use organic gardening and lawn care.

10. City Hall.  Encourage your city or town to use  natural/non-toxic solvents in public buildings, schools, and organic practices for green spaces.

 Our Breast Cancer Prevention Program:

Iodine testing and supplementation is the cornerstone of our breast cancer prevention program as discussed in previous articles. (20)

In addition to Iodine, we also include I3C (Indole-3 carbinol) and DIM (Di-Indole Methane).  These are broccoli extracts available as nutritional supplements which have beneficial effects on estrogen metabolism. (21) (22) (23) (24) (25)

Without boring you with the biochemistry, suffice it to say that the the breakdown and elimination of estrogen by the liver is beneficially diverted towards the 16 hydroxy pathway to estriol and away from the 2 hydroxy pathway which requires a methylation reaction. The net result is a decrease in breast cancer risk with the use of DIM.

DDT and Malaria Eradication

Although DDT agricultural use was banned in 1972, its use against mosquito-born malaria disease was never banned and continues to present day in various third world countries. In 2006, the World Health Organization promoted indoor residential DDT  spraying for malaria control in epidemic and endemic areas.(33)  Malaria eradication by controlling the mosquito population is a high priority for society and has enormous health benefits.  DDT and other chemical agents have been enormously helpful.  This cannot be doubted.  However these chemical agents must be used with care to avoid human toxicity, and to prevent development of insect resistance through over-use.(33)

Conclusion:

Rachel Carson deserves to be included in the list of “Great Women in Medicine”.   The medical profession is entrusted with guarding the health of the community.  When the time came to warn about indiscriminate spraying of DDT on agricultural and residential areas, where was the medical profession? They were nowhere to be found. They were silent and complicit in this great cover-up.   Instead, leading the battle was one small, frail woman who stood up against the powerful interests of the chemical industry.  That small voice of truth and reason was Rachel Carson.

Articles with Related Interest:

PCOS,BPA and Endocrine Disruptors

Is Your Baby Toxic from Environmental Pollution?

Risk Factors for Breast Cancer, Wrong Again

Breast Cancer Prevention with Iodine Supplementation Part One

Iodine Prevents and Treats Breast Cancer Part Two

Iodine Treats Breast Cancer, Overwhelming Evidence

Jeffrey Dach MD
7450 Griffin Road Suite 180/190
Davie Florida 33314
954-792-4663
www.jeffreydachmd.com
www.drdach.com
www.naturalmedicine101.com
www.truemedmd.com

(2) www.amazon.com/Silent-Spring-Rachel-Carson/dp/0395683297

(3) en.wikipedia.org/wiki/Silent_Spring

(4) www.worldofmolecules.com/pesticides/ddt.htm

(5) www.washingtonpost.com/wp-dyn/content/article/2007/05/22/AR2007052201574.html

(6) www.cdc.gov/malaria/facts.htm”

(7) seer.cancer.gov/statfacts/html/breast.html

(8) seer.cancer.gov/csr/1975_2004/results_single/sect_01_table.01.pdf

(9) www.ncbi.nlm.nih.gov/entrez/query.fcgi?CMD=search&DB=pubmed”

(10)
http://www.bcaction.org/Pages/SearchablePages/1992Newsletters/Newsletter013B.html

(10a) Jerome B. Westin and Elihu Richter of the Unit for Environmental and Occupational Medicine of Hebrew University-Hadassah School of Medicine in Jerusalem. Annals of the New York Academy of Sciences, vol. 609, 1990.

(10b) Jerome B. Westin and Elihu Richter, “The Israeli Breast-Cancer Anomaly,” in Devra Lee Davis and David Hoel, editors, TRENDS IN CANCER MORTALITY IN INDUSTRIAL COUNTRIES (New York: New York Academy of Sciences, 1990), pgs. 269-279.

(11) www.ehponline.org/docs/1996/104-12/shelbyfig1.GIF

(12) www.ohiou.edu/news/months/may/347.html

(12a) www.annals.org/cgi/content/full/122/10/778

(13) www.leflaw.com/index.php?module=pagemaster&
PAGE_user_op=view_page&PAGE_id=20

(14) library.silentspring.org/publications/pdfs/brody_rudel_EHP03.pdf

(15) www.worldofmolecules.com/pesticides/ddt.htm

(16) www.ourstolenfuture.org/index.htm

(17) www.ourstolenfuture.org/Basics/chapters.htm

(18) www.p2pays.org/ref/06/05386.htm

(19) www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1470392

(20) www.brynosaurus.com/funny/alligator/paper/Alligator-Penis-Apopka-Guillette.htm

(21) www.dimfaq.com/site/articles.htm

(22) www.allergyresearchgroup.com/news/letters/2005oct_dim.htm

(23) www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=17317210
&query_hl=6&itool=pubmed_docsum

(24)http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&
list_uids=16434996&query_hl=10&itool=pubmed_docsum

(25) lpi.oregonstate.edu/infocenter/phytochemicals/i3c/

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26) http://www.youtube.com/watch?v=Ipbc-6IvMQI

Pesticides – DDT – Rachel Carson – Silent Spring
Published on Apr 18, 2013  Historical clips on DDT, Rachel Carson and science explaining why humans pollute. Video put together for the MSc in Environmental Technology.

27) http://www.youtube.com/watch?v=vbtp2B-IFmw
Uploaded on Mar 12, 2008  This 2006 History Day documentary was completed by Samuel Hudnet and Justin Tibbels and won the silver medal at the National History Day 2006 contest.   MDHumanitiesCouncil

28 ) http://www.nytimes.com/2012/09/23/magazine/how-silent-spring-ignited-the-environmental-movement.html?pagewanted=all&_r=0

How ‘Silent Spring’ Ignited the Environmental Movement
By ELIZA GRISWOLD Published: September 21, 2012  New York Times

29) http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1247187/
Environ Health Perspect. 2004 June; 112(9): 950–958.
Published online 2004 May 20. doi:  10.1289/ehp.7135
Association of Pesticide Exposure with Neurologic Dysfunction and Disease  Freya Kamel and Jane A. Hoppin
National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina, USA

33) http://www.ncbi.nlm.nih.gov/books/NBK1724/
Dichlorodiphenyltrichloroethane (DDT) for Indoor Residual Spraying in Africa: How Can It Be Used for Malaria Control?
Shobha Sadasivaiah, Yeºim Tozan, and Joel G. Breman.

Defining and Defeating the Intolerable Burden of Malaria III: Progress and Perspectives: Supplement to Volume 77(6) of American Journal of Tropical Medicine and Hygiene.
Breman JG, Alilio MS, White NJ, editors.
Northbrook (IL): American Society of Tropical Medicine and Hygiene; 2007 Dec.

Jeffrey Dach MD
www.jeffreydach.com
www.drdach.com
www.naturalmedicine101.com
www.truemedmd.com

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