February 24, 2024

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Harvard: This kind of cosmetics can reduce women’s fertility by 40%!

Harvard: This kind of cosmetics can reduce women’s fertility by 40%!



 

Harvard: This kind of cosmetics can reduce women’s fertility by 40%! The culprit turned out to be it…

Recently, researchers from the Icahn School of Medicine at Mount Sinai, Harvard University and the National University of Singapore published a study in the journal Science of the Total Environment. “The permanent chemical substance PFAS may actually reduce female fertility by about 40%!

 

Harvard: This kind of cosmetics can reduce women's fertility by 40%!(Image source: Science of the Total Environment)

 

PFAS is a general term for a large class of substances, including thousands of chemical substances such as perfluorooctanoic acid, perfluorooctanesulfonyl compounds, and perfluorobutanesulfonic acid. T

hese substances will accumulate in the human body, and when they accumulate to a certain extent, they will destroy the normal activities of some tissues and organs, disrupt cell functions, eventually affect development, reproduction, etc., and cause liver poisoning, endocrine disorders, and carcinogenic hazards.

 

Harvard: This kind of cosmetics can reduce women's fertility by 40%!The PFAS most harmful to human health include PFOS and PFOA. (Image source: Internet)

 

The researchers analyzed 382 female participants who were willing to become pregnant in the Singapore Pregnancy Long-Term Mother and Child Study (S-PRESTO) cohort, 77.2% of whom were Chinese, with an average age of 30.5 years.

 

They collected PFAS in the participants’ plasma and then followed up pregnancy status with telephone follow-up at 6, 9, and 12 months to assess the association between pre-pregnancy plasma PFAS concentrations and fertility outcomes in women.

 

Surprisingly, they found that greater exposure to PFAS was associated with a lower probability of clinical pregnancy and live birth; within one year of follow-up, those with the highest PFAS levels were more likely to conceive or The likelihood of giving birth is reduced by about 30-40% on average!

 

Harvard: This kind of cosmetics can reduce women's fertility by 40%!Association of pre-pregnancy PFAS concentrations with fertility outcomes. (Image source: Science of the Total Environment)


It’s just astounding. With so many members of the PFAS family, which ingredient is the “most toxic”? The researchers further explored the relationship between different PFAS and fertility.

After analyzing the different PFAS, they came to a consistent conclusion – PFDA, PFOS, PFOA and PFHpA were most associated with reduced fertility in women.

 

Harvard: This kind of cosmetics can reduce women's fertility by 40%!The proportion of the effect of different components of PFAS mixture on fertility in BWQS regression analysis. (Image source: Science of the Total Environment)

 


My God, the cosmetics that have been relied on for so many years can actually cause such great harm to the body. So what kinds of makeup are covered by PFAS?

American scholars have conducted PFAS tests on more than 230 products (including concealer, foundation, eyebrow products and lip products) on the market, and were surprised to find that 52% of the products were positive for fluorine (because PFAS contains highly stable carbon-fluorine bond, so its content can be detected by the fluorine reaction).

 

PFAS in North American Cosmetics. (Image source: Environmental Science & Technology Letters)

 

In this part of the products, 63% of the foundation, 58% of the eye products, 55% of the lip products and 47% of the mascara contain a relatively high concentration of fluorine; Most lipsticks have a high concentration of fluorine.

 

Fluorine content in different cosmetic products. (Image source: Environmental Science & Technology Letters)

 

In other words, you are “poisoning” yourself in disguise by smearing and grooming your face every day? ! This is simply the greatest malice I have felt since 2023… As a delicate pig girl, is there any way to get rid of this “beautiful poison”?

 

Coincidentally, recently, the JAMA sub-journal gave an unexpected coup— scientists from Australia discovered that regular blood donation can reduce the level of PFAS in the blood by 30%, which may be an effective intervention.

 

The study recruited 285 Australian firefighters with high levels of PFAS in their blood, randomly divided them into three groups: donate blood every six weeks for a year, donate blood every 12 weeks for a year, and donate blood for a year.

Participants’ PFAS levels were measured at four time points (at recruitment, at the start of the trial, at the end of the trial, and three months after the end).



The results showed that compared with those who did not donate blood, blood donation can reduce the average serum PFAS concentration of participants by about 30%, and this difference remained unchanged three months after the end of the trial, with good persistence.

 

Mean change in PFAS over the trial period. (Image source: JAMA Network Open)



This may be because PFAS binds to proteins that mainly exist in serum, and as the blood or plasma of firefighters flows out of the body, its own PFAS burden gradually decreases.

 

 

 

 

 

 

 

References:
[1] Cohen NJ, Yao M, Media V, India-Aldana S, Mouzica T, Andra SS, Narasimhan S, Meher AK, Arora M, Chan JKY, Chan SY, Loy SL, Minguez-Alarcon L, Oulhote Y, Huang J, Valvi D. Exposure to perfluoroalkyl substances and women’s fertility outcomes in a Singaporean population-based preconception cohort. Sci Total Environ. 2023 May 15;873:162267. doi: 10.1016/j.cytotenv.2023.162267. Epub 2023 Feb 17. PMID:36801327.

[2] Heather D. Whitehead, Marta Venier, Yan Wu, Emi Eastman, Shannon Urbanik, Miriam L. Diamond, Anna Shalin, Heather Schwartz-Narbonne, Thomas A. Bruton, Arlene Blum, Zhanyun Wang, Megan Green, Meghanne Tighe, John T. Wilkinson, Sean McGuinness, and Graham F. Peaslee. Fluorinated Compounds in North American Cosmetics. Environmental Science & Technology Letters 2021 8 (7), 538-544.DOI: 10.1021/acs.estlett.1c00240.

[3] Gasiorowski R, Forbes MK, Silver G, Krastev Y, Hamdorf B, Lewis B, Tisbury M, Cole-Sinclair M, Lanphear BP, Klein RA, Holmes N, Taylor MP. Effect of Plasma and Blood Donations on Levels of Perfluoroalkyl and Polyfluoroalkyl Substances in Firefighters in Australia: A Randomized Clinical Trial. JAMA Netw Open. 2022 Apr 1;5(4):e226257. doi: 10.1001/jamanetworkopen.2022.6257. PMID: 35394514; PMCID: PMC8994130.

Harvard: This kind of cosmetics can reduce women’s fertility by 40%!

(source:internet, reference only)


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