Breast cancer exposure

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Although environmental contaminants have potential to affect breast cancer risk, explicit environmental links to this disease are limited. The most well-defined environmental risk factors are radiation exposure and alcohol ingestion. Diet is clearly related to the increased incidence of breast cancer in developed countries, but its precise role is not yet established.

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Reuters Health - The once-common pesticide DDT has long been linked to an increased risk of breast cancer. Women exposed to DDT before age 14, particularly in infancy and early childhood, were most likely to develop breast cancer, before age 50 and before they went through menopause, researchers report in the Journal of the National Cancer Institute. However, women exposed to DDT after infancy had a greater risk of developing cancer later, at ages 50 to

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Richard G. Republish our articles for free, online or in print, under Creative Commons licence. A study from Harvard has found greater risk of breast cancer in women who live in neighborhoods that have higher levels of outdoor light during the night.

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The results of several studies suggest that women who work at night -- factory workers, doctors, nurses, and police officers, for example -- have a higher risk of breast cancer compared to women who work during the day. Other research suggests that women who live in areas with high levels of external light at night street lights, for example have a higher risk of breast cancer. Researchers think that this increase in risk is linked to melatonin levels.

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Objectives The aim of this study was to investigate if exposure to chemicals in the workplace was associated with an increased risk of postmenopausal breast cancer. Occupational exposure to various chemicals was assessed from job-exposure matrices. An extensive set of individual data on hormonal breast cancer risk factors were collected via a baseline questionnaire and used for confounding control.

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Chemicals and radiation linked to breast cancer can be found in everyday products that we use on our bodies, in our homes, workplaces and even in the food we consume as well as in air, dust and water. Some chemicals and physical agents are known or likely to cause cancer—these are called carcinogens. And some upset the normal checks and balances that repair or kill damaged cells.

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Most research on risk factors for breast cancer has focused on exposures and behaviors that occur during adulthood. However, there's growing interest in how events early in life may affect adult breast cancer risk [ ]. These include factors related to the prenatal environment, infancy, childhood and the teen years adolescence. Breast cancer in children, teens and young adults is very rare.

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According to a new study published this week in the Journal of the National Cancer Institute, women exposed to the pesticide DDT are still at risk for developing breast cancer four decades later. The findings are based on a year longitudinal cohort of over 15, pregnant women, many of whom had been exposed to the pesticide before it was banned in the s. It found that participants who came in contact with high levels of DDT in their youth have an increased risk of breast cancer through the age 54 — even 40 years after encountering the chemical.

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All women exposed to high levels of DDT are at increased risk for breast cancer through age 54, but the timing of cancer risk depends on when they were first exposed, according to a new study published today in the Journal of the National Cancer Institute. Women exposed before 14 years of age, particularly in infancy and early childhood, were most likely to develop premenopausal breast cancer, while those who were exposed after infancy were at increased risk of developing cancer later, at years of age. We know that if harmful exposures occur at times when breast tissue is rapidly changing, such as during puberty, they impact breast development in ways that can later result in cancer," said lead author Barbara A.

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