I just included this information in an educational session I did for my WIC staff- focusing on the fact that not all women have sufficient glandular tissue.  Since our clientele is largely of Mexican descent, they were quite interested in this.

Sue

<<The Sonoran Mayan people of the valley split philosophically over the use of pesticides and other modern agricultural techniques during the country’s Green Revolution of the early 1950s, when large-scale pesticide-based agriculture came into practice. Valley residents embraced pesticides, herbicides and other agricultural chemicals, including spraying in homes, while the other group, which moved to the foothills, avoided them entirely.
“These groups were the same in every respect, culturally, genetically and socio- economically, except for their use of pesticides,” “They had the same diet, the same child-rearing practices and the same school system.”
Although the farmers in the valley and the ranchers in the foothills had cousins and other extended family members living in the other community, they never intermarried because of their strong differences over pesticides.


Guillette began her research in 1966, comparing the physical coordination and mental development in preschool children from the two communities. In an earlier published study, she found that valley children were less adept at catching a ball, reflecting poor eye-hand coordination, and showed dramatic differences in their ability to draw a person.
Her more recent study focused on breast development in girls between the ages of 8 and 10.
 Guillette's latest research finds that some of the pre-adolescent daughters of mothers exposed to pesticide spraying will never be able to breast-feed their babies. With others there is uncertainty. Although there is breast growth, some daughters lacked development of the mammary gland needed to produce milk, or developed a minimal amount.
As the girls in the exposed group matured, their breast size became much larger than normal, yet they had less mammary tissue and often none at all, while the unexposed girls were normal.
"A large study using her techniques was done in India showing the exact same results," <<<

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