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Xenoestrogens & Early Puberty

Until the twentieth century, the average age of puberty for girls was 16 or 17 years old.

December 2, 2009 |
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Until the 20th century, the average age of puberty for girls was 16 or 17 years old. Now, we’re seeing significant numbers of girls starting to grow breasts before they’re 8. The change has been so dramatic that the medical profession has had to keep changing its standards for what’s currently pathological. The question is why.
Is it just fiction that the increase in meat consumption has something to do with it?
It appears to be fact. Based on Harvard data, “girls who consumed more animal protein and less vegetable protein started their periods earlier.” And it may not just be the hormone content in milk, meat, and eggs.
A study of Korean children found that seafood and processed meat seemed to be the main culprits, and they think it may be the endocrine-disrupting industrial chemicals that build up in meat—fish in particular—like the dioxins and PCBS, that may be what’s doing it.

To see any graphs, charts, graphics, images, and quotes to which Dr. Greger may be referring watch the above video. This is just an approximation of the audio contributed by veganmontreal.

To help out on the site please email volunteer@nutritionfacts.org

Dr. Michael Greger

Doctor's Note

Please feel free to post any ask-the-doctor type questions here in the comments section and I’d be happy to try to answer them. And check out the companion video, "Xenoestrogens & Sperm Counts." Also, there are 1,449 other subjects covered in the rest of my videos--please feel free to explore them as well!

For more context, check out my associated blog posts: Stool Size and Breast Cancer RiskSoy and breast cancer: an update, and Why Are Children Starting Puberty Earlier?

  • http://nutritionfacts.org/members/mgreger/ Michael Greger M.D.

    Please feel free to post any ask-the-doctor type questions here in the comments section and I’d be happy to try to answer them. And check out the companion video, “Xenoestrogens & Sperm Counts.” Also, there are 1,449 other subjects covered in the rest of my videos–please feel free to explore them as well!

  • http://nutritionfacts.org/members/gwen23/ gwen23

    imagine how a plant-based america would change the whole birth control debate! i wonder how much teenage pregnancy would be reduced?

  • Marc29goingon30

    Ive heard that environmental pollutants are much less in colder water, Alaskan Salmon, because the cold water is much dense and thus pollutants descend faster….but what about migrating fish carrying the contaminant?

  • Marc29goingon30

    Ive heard that environmental pollutants are much less in colder water, Alaskan Salmon, because the cold water is much dense and thus pollutants descend faster….but what about migrating fish carrying the contaminant?