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Endocrine-disrupting chemicals: A Systematic Review of Epidemiological Studies

Wan et al,

2022

Crit Rev Food Sci Nutr

A systematic review of 131 epidemiological studies examining endocrine-disrupting chemicals (EDCs) and breast cancer risk found evidence that exposure to various EDCs—including pesticides (DDT/DDE, atrazine, dioxin), synthetic chemicals (BPA, phthalates, PFAS, PCBs, PBDEs), and other compounds found in everyday products—may elevate breast cancer risk, particularly when exposure occurs during early life. The review identified food as a major route of EDC exposure and emphasized that because most EDCs persist in the environment and accumulate in the body over time, long-term multi-generational health impacts need to be assessed. The authors call for improved exposure assessments of EDCs in food and food packaging, along with careful evaluation of their links to breast cancer development to inform policy-making and regulations aimed at protecting public health.

Endocrine disrupting chemicals and breast cancer: a systematic review of epidemiological studies.

Wan et al,

2022

Crit Rev Food Sci Nutr

This systematic review of 131 epidemiological studies evaluated the association between various endocrine-disrupting chemicals, including phthalates and hormonal exposures like contraceptive pills, and the risk of breast cancer. It found that several EDCs, particularly phthalates and oral contraceptive use, were consistently associated with increased breast cancer risk across multiple studies.

Soy intake and breast cancer risk: a prospective study of 300,000 Chinese women and a dose-response meta-analysis.

Wei et al,

2020

Eu J Epidemiol

A large prospective study of over 300,000 Chinese women followed for 10 years found no association between moderate soy intake (averaging 9.4 mg/day of soy isoflavones) and breast cancer risk, even when comparing the highest (19.1 mg/day) to lowest (4.5 mg/day) intake groups. However, a meta-analysis combining this study with other prospective cohorts found that each 10 mg/day increase in soy isoflavone intake was associated with a modest 3% reduction in breast cancer risk. These findings suggest that while moderate soy consumption typical of Chinese diets appears safe and not associated with increased breast cancer risk, higher intakes may provide modest protective benefits, contrasting with earlier concerns about soy and breast cancer and supporting the traditional consumption of soy foods as part of a healthy diet.

Endocrine disruptors on and in fruits and vegetables: Estimation of the potential exposure of the French population.

Lee et al,

2022

Food Chem

This study assessed the exposure of the French population to endocrine-disrupting compounds (EDCs) from pesticides and phytoestrogens in fruits, vegetables, and soy-based foods. Among 379 pesticides used in France, 70 were identified as potential EDCs, leading to an estimated daily exposure of 509 µg from pesticides, with anti-androgens as the most significant contributors. Additionally, soy consumers had an estimated daily intake of 6,915 µg of isoflavones (plant-based phytoestrogens), while non-soy consumers had 1,930 µg.

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