{"id":38171,"date":"2025-04-08T00:01:10","date_gmt":"2025-04-08T04:01:10","guid":{"rendered":"https:\/\/beyondpesticides.org\/dailynewsblog\/?p=38171"},"modified":"2025-07-24T14:45:36","modified_gmt":"2025-07-24T18:45:36","slug":"literature-review-of-over-200-studies-highlights-pesticide-threats-to-womens-reproductive-health","status":"publish","type":"post","link":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/04\/literature-review-of-over-200-studies-highlights-pesticide-threats-to-womens-reproductive-health\/","title":{"rendered":"Literature Review of Over 200 Studies Highlights Pesticide Threats to Women\u2019s Reproductive Health"},"content":{"rendered":"

(Beyond Pesticides<\/em>, April 8, 2025) A comprehensive literature review in Environment & Health<\/em><\/a> analyzes evidence from human biomonitoring, epidemiological studies, and toxicological studies that link adverse effects on women\u2019s reproductive health<\/a>, specifically impacting the ovary, to pesticide exposure. In examining the scientific literature, consisting of over 200 studies performed in the last 25 years, the authors find pesticide exposure threatens women\u2019s health<\/a> through ovarian dysfunction.<\/p>\n

\u201cEpidemiological studies have shown that pesticide exposures are associated with early\/delayed menarche [first occurrence of menstruation], menstrual cycle disorders, early menopause, long time to pregnancy, polycystic ovary syndrome, primary ovarian insufficiency, infertility, and implantation failure in women,\u201d the researchers state. They continue, \u201cBoth in vivo [in animals] and in vitro [in cells] studies have shown that exposure to pesticides disrupts the estrous cycle, reduces the follicle pool, alters hormone levels, and impairs oocyte [egg] maturation.\u201d<\/p>\n

These reproductive implications are noted with many different classes of pesticides, such as insecticides, including organochlorine pesticides (OCPs), organophosphates (OPs), pyrethroids, and neonicotinoids, as well as herbicides and fungicides. The authors, however, comment on present research gaps: \u201cMuch of the available epidemiological evidence focuses on legacy insecticides, such as OCPs, and a subset of insecticides that are still in use but in decline, such as OPs. Little research has been done on relatively newer insecticides whose use is increasing, such as neonicotinoids. Compared to insecticides, fewer studies have been conducted on herbicides and fungicides, although biomonitoring data show that these agrochemicals are also detected at relatively high rates in human biological samples.\u201d<\/p>\n

Despite the disproportionate amount of scientific literature available for all types of pesticides, the evidence shows common mechanisms of action of these different chemicals on ovarian function. The researchers report that these mechanisms include effects on steroid receptors, hormone synthesis, oxidative stress<\/a>, inflammation, epigenetic<\/a> modifications, and signaling pathways.<\/p>\n

The ovaries, crucial for female reproduction, provide many functions that include producing eggs\/oocytes and synthesizing steroid hormones such as estrogen and progesterone, which play a role in maintaining reproductive tissue, regulating ovarian function and ovulation, and establishing pregnancy. These vital functions are threatened by pesticide exposure, which as the researchers state, \u201ccan interfere with steroid hormone synthesis by altering the activity and expression of key enzymes involved in steroidogenesis, leading to ovarian dysfunction.\u201d<\/p>\n

Numerous studies, as highlighted in the literature review, show that pesticide exposure \u201ccan induce oxidative stress, inflammation and apoptosis [cell death] in ovarian cells, leading to DNA damage, altered gene expression and impaired ovarian function.\u201d These studies cover various impacts on ovaries including abnormal estrous\/menstrual cycles, reduced follicle numbers\/diminished ovarian reserve, changes in hormone levels, disrupted oocyte maturation, decreased ovarian weight, reduced fertility, and increased risks of ovarian disorders such as polycystic ovary syndrome (PCOS) and premature ovarian insufficiency (POI). \u201cAs many ovarian diseases are of unknown etiology, there is growing concern about the contribution of environmental factors to ovarian dysfunction,\u201d the authors say. These studies provide evidence that pesticide exposure represents a large threat to women\u2019s reproductive health.<\/p>\n

Insecticides<\/strong><\/p>\n

Organochlorine Pesticides (OCPs)<\/em><\/p>\n

As previously reported<\/a> by Beyond Pesticides, for the most part, organochlorine<\/a> insecticides, including dichlorodiphenyltrichloroethane (DDT<\/a>), are no longer used worldwide but the legacy of their poisoning and contamination persists. OCPs are primarily made up of chlorine atoms, classified as persistent organic pollutants due to their toxic longevity in the environment. Although many countries ban most organochlorine compounds, OCPs remain<\/a> in the soil, water, and air at levels exceeding U.S. Environmental Protection Agency (EPA) standards.<\/p>\n

Within the literature review, the researchers share the following relevant study results:<\/p>\n