There is a piece in the latest Scientific American about effects of DDT a couple of generations down.

“Using more than 200 mother-daughter-granddaughter triads, Cohn’s team found that the granddaughters of those in the top third of DDT exposure during pregnancy had 2.6 times the odds of developing an unhealthy BMI. They were also more than twice as likely to have started their periods before age 11. Both factors, Cohn says, are known to raise the risk of later developing breast cancer and cardiovascular disease.”

Here is the link to the paper. Yet again I can’t get SciHub to work, so it’s only the abstract. (Maybe it’s moved again, that happens)

https://cebp.aacrjournals.org/content/early/2021/04/13/1055-9965.EPI-20-1456

Now I can think of a confounding factor for this. I would expect the greatest DDT exposure back in the day would have been in poorer districts, where the marshy land was less desirable. Those parts of society in the US also have the worse problems with obesity. So this could purely be a social thing.

Also, as menarche age is at least partly kicked off by reaching a certain body weight, chubbier girls will get there earlier anyway.

buffy said:

a certain body weight, chubbier girls

are you sure you don’t mean BMI there

bump/

sarahs mum said:

bump/

ta. :)

This is for buffy who posted about this yesterday morning.
Dr. Cohn discussed her recent publication on how grandmother’s exposure to the pesticide, DDT in the 1960’s, during her pregnancy, is linked to earlier onset of menstrual periods and obesity in her granddaughters. These granddaughters are the current young women now about age 20. This research was made possible by the Child Health and Development Studies where 15,000 pregnant women donated blood samples during and shortly after their pregnancies in the 1960s. These women have been followed for their own health and the health of their daughters and granddaughters over 60 years. This work is the first to show such a 3 generation effect for a pesticide in humans and gives new meaning to the idea of “forever” chemicals. Dr. Cohn discussed what this study means for current generations of women and current environmental issues.
https://www.youtube.com/watch?v=SBsKE0H0qXo&feature=emb_imp_woyt

roughbarked said:

sarahs mum said:

bump/

ta. :)

This is for buffy who posted about this yesterday morning.
Dr. Cohn discussed her recent publication on how grandmother’s exposure to the pesticide, DDT in the 1960’s, during her pregnancy, is linked to earlier onset of menstrual periods and obesity in her granddaughters. These granddaughters are the current young women now about age 20. This research was made possible by the Child Health and Development Studies where 15,000 pregnant women donated blood samples during and shortly after their pregnancies in the 1960s. These women have been followed for their own health and the health of their daughters and granddaughters over 60 years. This work is the first to show such a 3 generation effect for a pesticide in humans and gives new meaning to the idea of “forever” chemicals. Dr. Cohn discussed what this study means for current generations of women and current environmental issues.
https://www.youtube.com/watch?v=SBsKE0H0qXo&feature=emb_imp_woyt

reference site; https://www.healthandenvironment.org/webinars/96572

roughbarked said:

roughbarked said:

sarahs mum said:

bump/

ta. :)

This is for buffy who posted about this yesterday morning.
Dr. Cohn discussed her recent publication on how grandmother’s exposure to the pesticide, DDT in the 1960’s, during her pregnancy, is linked to earlier onset of menstrual periods and obesity in her granddaughters. These granddaughters are the current young women now about age 20. This research was made possible by the Child Health and Development Studies where 15,000 pregnant women donated blood samples during and shortly after their pregnancies in the 1960s. These women have been followed for their own health and the health of their daughters and granddaughters over 60 years. This work is the first to show such a 3 generation effect for a pesticide in humans and gives new meaning to the idea of “forever” chemicals. Dr. Cohn discussed what this study means for current generations of women and current environmental issues.
https://www.youtube.com/watch?v=SBsKE0H0qXo&feature=emb_imp_woyt

reference site; https://www.healthandenvironment.org/webinars/96572

and if you go here: https://nossofuturoroubado.com.br/ddt-do-soro-perinatal-da-avo-em-relacao-a-menarca-precoce-da-neta-e-a-obesidade-adulta-tres-geracoes-na-coorte-de-estudos-de-desenvolvimento-e-saude-infantil/
and click on save to pdf on the right, under print.

a bump for buffy?