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Increase in Breast Cancer Linked to Pollution Levels

Study suggests everyday toxins a risk factor

Introduction

A recent study conducted at Aberdeen University suggests that exposure to everyday environmental pollution could be a contributing factor to the rising rates of breast cancer. The research involved subjecting female sheep to a mixture of chemicals present in the environment, such as pesticides and synthetic estrogen found in contraceptives and processed human sewage sludge. The results showed abnormalities in the mammary glands of the sheep, including changes in proteins associated with breast cancer in humans.

Rising Rates of Breast Cancer

With over 41,000 new cases of breast cancer being diagnosed each year in the UK, breast cancer remains the most common cancer among women. The incidence of breast cancer has been steadily increasing by 2% annually, making it crucial to investigate various potential risk factors, including environmental pollution.

Real-Life Exposure Study

Dr. Paul Fowler, senior lecturer in reproductive physiology at Aberdeen University, explained that the study aimed to replicate a "real-life" exposure scenario instead of using extremely high doses of chemicals. By subjecting the sheep to a mixture of chemicals present in the environment, the researchers aimed to simulate the typical exposure that humans would experience. The unexpected changes observed in the mammary glands of the sheep suggest the need for further investigation.

Potential Chemicals Involved

While the study does not identify the specific chemicals responsible for the observed effects, it raises important questions about the potential impact of environmental pollution on human health. Dr. Fowler emphasized the need for additional research to identify the potential chemicals or combination of chemicals that could be causing the changes and to determine if similar effects could be observed in humans.

Response from Breast Cancer Charities

While environmental campaigners highlight the importance of eliminating or replacing problematic chemicals in our daily lives, breast cancer charities caution that there is currently no conclusive evidence linking environmental pollutants directly to the disease. Lorraine Dallas, assistant director of Breast Cancer Care Scotland, and Liz Baker, Cancer Research UK's science information officer, emphasized the significance of lifestyle factors such as reproductive history, alcohol consumption, and late childbirth as the strongest risk factors for breast cancer in women.

The Need for Further Research

Despite the differing opinions, the study conducted at Aberdeen University raises important questions about the potential impact of environmental pollution on breast cancer rates. It highlights the necessity for additional research to better understand the relationship between environmental toxins and the onset of breast cancer. As the incidence of breast cancer continues to rise, it becomes increasingly vital to explore all potential risk factors and take necessary steps to mitigate their effects.

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