HerMetabolism.org -No Daughter Left Behind

Free evidence-based Nonpartisan Science and Education About Her Metabolism

Her Metabolism is a Minnesota USA Nonprofit, with 501(c)(3) status pending, offering free nonpartisan evidence-based science and education about her metabolism.



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Her Metabolism Introduction

Welcome to the website for Her Metabolism: a place to receive free evidence-based nonpartisan science and education about her metabolism. The site is still under construction, but a lot of pages are already available. Feel free to contact us with any questions, comments, concerns, or advice - about the content, the website, or otherwise. Take a look at the sitemap for a bird's eye view of the website. All the pages are optimized for printing.

Introduction to Her Metabolism

Her Metabolism is definitely about eating - but also about much more. Indeed, her metabolism is all of the chemical changes in her body: "changes to make energy and the materials [that] cells and organisms need to grow, reproduce, and stay healthy, as well as the changes to get rid of toxic substances."1

This website, and the the nonprofit that created it, exists to give free evidence-based nonpartisan science and education about her metabolism. All factual points are fully referenced, with citations to either or both (a) leading scholars and experts in relevant fields, and (b) data and analysis in leading peer-reviewed academic publications in relevant fields.

Good News and Bad News

Some of the pages have bad news. For example, the page on delayed motherhood reports the science showing that delayed motherhood is massively risky and harmful for her metabolism: doubling and tripling her risk of breast cancer,2-4 depression,5-7 and suicide5 - while increasing her risk of causing Down Syndrome in her child by as much as 200 times (+20,000%), compared to teen motherhood.8 Likewise, the page on tampons reports the current scientific common knowledge that tampons hurt and kill women and girls every day.9-11

Other pages have good news. For example, the page on motherhood and lactation and breastfeeding reports the science that breastfeeding hugely reduces her risk of breast cancer.12-15



  1. Definition of Metabolism. National Cancer Institute. Published February 2, 2011. Accessed June 4, 2024. https://www.cancer.gov/publications/dictionaries/cancer-terms/def/metabolism
  2. MacMahon B, Cole P, Lin TM, et al. Age at first birth and breast cancer risk. Bulletin of the World Health Organization. 1970;43(2):209-221. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2427645/
  3. Bernstein L. Epidemiology of endocrine-related risk factors for breast cancer. J Mammary Gland Biol Neoplasia. 2002;7(1):3-15. http://doi.org/doi:10.1023/a:1015714305420
  4. Reproductive history and cancer risk. National Institutes of Health: National Cancer Institute. Published November 9, 2016. Accessed May 23, 2024. https://www.cancer.gov/about-cancer/causes-prevention/risk/hormones/reproductive-history-fact-sheet
  5. Abortion. Her Metabolism. http://hermetabolism.org/abortion/
  6. Hu X, Ma J, Jemal A, et al. Suicide risk among individuals diagnosed with cancer in the US, 2000-2016. JAMA. 2023;6(1):e2251863. http://doi.org/doi:10.1001/jamanetworkopen.2022.51863.
  7. Woo HG, Park S, Yon H, et al. National trends in sadness, suicidality, and covid-19 pandemic–related risk factors among South Korean adolescents from 2005 to 2021. JAMA. 2023;6(5):e2314838. http://doi.org/doi:10.1001/jamanetworkopen.2023.14838
  8. Teen Motherhood and Down Syndrome. Her Metabolism. https://hermetabolism.org/womanhood/motherhood/teen-motherhood/teen-motherhood-and-down-syndrome/
  9. Vostral S. Toxic shock syndrome, tampons and laboratory standard–setting. CMAJ. 2017;189(20):E726-E728. http://doi.org/10.1503/cmaj.161479
  10. Schlievert PM. Menstrual TSS remains a dangerous threat. eClinicalMedicine. 2020;21. http://doi.org/doi:10.1016/j.eclinm.2020.100316
  11. Billon A, Gustin MP, Tristan A, et al. Association of characteristics of tampon use with menstrual toxic shock syndrome in France. eClinicalMedicine. 2020;21. http://doi.org/doi:10.1016/j.eclinm.2020.100308
  12. Breastfeeding for cancer prevention. Centers for Disease Control and Prevention. Published August 1, 2019. Accessed June 25, 2024. https://blogs.cdc.gov/cancer/2019/08/01/breastfeeding-for-cancer-prevention/
  13. Stordal B. Breastfeeding reduces the risk of breast cancer: A call for action in high‐income countries with low rates of breastfeeding. Cancer Med. 2022;12(4):4616-4625. http://doi.org/doi:10.1002/cam4.5288
  14. Breast cancer risk: Breastfeeding. Susan G. Komen. Accessed June 25, 2024. https://www.komen.org/breast-cancer/risk-factor/not-breast-feeding/
  15. Abraham M, Lak MA, Gurz D, Nolasco FOM, Kondraju PK, Iqbal J. A Narrative Review of Breastfeeding and Its Correlation With Breast Cancer: Current understanding and outcomes. Cureus. 2023;15(8):e44081. http://doi.org/doi:10.7759/cureus.44081

Medical, Legal, and Metabolic Advice

Here in the USA, it is generally illegal and a bad idea for anyone but a jurisdiction-licensed physician to give medical advice, anyone but a jurisdiction-licensed attorney to give legal advice, anyone but a jurisdiction-licensed nutritionist or registered dietician to give metabolic advice, and so forth. This website's information is generally incomplete to predict how applying it may affect a given visitor - because the effects depend on the person's unique circumstances and characteristics.

So, here is the only medical, legal, and metabolic advice on this website: None of this website is individualized medical, legal, or metabolic advice. It is general information. You should not try to apply any of this information to your life, unless you know what you are doing. Generally, the governments of USA's jurisdictions (states and territories) declare two things through law:

  1. Without the guidance of a jurisdiction-licensed physician, attorney, or nutritionist: you do not know what you are doing, so it is unwise and unsafe for you to make too many decision about your medical, legal, and metabolic status and circumstances, and
  2. no one but a licensed physician, attorney, or nutritionist can safely and effectively advise you about those statuses and circumstances - thus, it is generally illegal for anyone else to try.

Obviously, those standards are extremely conservative, if not heavy-handed. However, one should remember that many of those people in government who uphold such strict standards have seen the stuff of nightmares: predictable, preventable, terrible consequences when the least capable and least conscientious people make the worst decisions - whether medically, legally, nutritionally, or otherwise. So, it is not wildly unreasonable to promote - even to legally command - erring on the safe side. Still, various jurisdictions do provide some exceptions to those exceptionally strict standards under law.

Here in Minnesota (and in many other U.S. states and territories) a person can help you with certain aspects of your medical, legal, and metabolic status and circumstances - even when that person is not formally licensed by the jurisdiction. Minnesota, for example, allows various people besides licensed nutritionists and registered dieticians to give metabolic advice and guidance: certain Complementary and Alternative Health Care providers, which Minnesota allows under law. Minn. Stat. § 146A. Thus, one need not feel completely locked into the strict standards listed above (though jurisdictions do typically still hold alternative providers to certain basic standards under law). Instead, in the USA, one can discuss the information on this website, and receive guidance about it, from various experts - whether jurisdiction-licensed or not. Meanwhile, this thorough and smart-sounding notice and explanation should not tempt any visitor into having any extra trust for the information in this website. At most, as the saying goes: "trust but verify."


Dr. R. Floyd Lindquist

Her Metabolism: Founder, Treasurer, Secretary, Lead Data Scientist, and Director of Communications and Research

PhD (Thanatology), PsyD (Psychology), DLP (Law and Policy), MPH (Nutrition & Epidemiology), MS (Nutrition), MA (Counseling)


Her Metabolism is a Minnesota Nonprofit (with 501c3 status pending)