Related Experiment Videos
Obesity and breast cancer
1Oncology Department, St. Thomas' Hospital, London, UK.
Summary
Western lifestyle factors like diet and obesity promote insulin resistance, potentially increasing breast cancer risk. A high-fiber, low-fat diet may help mitigate this risk in early breast cancer patients.
Area of Science:
- Oncology
- Endocrinology
- Nutritional Science
Background:
- High incidence of breast cancer in Western women linked to diet, obesity, and weight gain timing.
- Western lifestyle factors, including diet and exercise, contribute to insulin resistance and hyperinsulinemia.
- Insulin resistance and hyperinsulinemia may synergize with estrogen, promoting breast cancer development and growth.
Purpose of the Study:
- To postulate a mechanism linking Western diet, insulin resistance, and breast cancer development.
- To investigate the role of insulin resistance and hyperinsulinemia in mammary carcinogenesis.
- To propose a clinical trial testing a high-fiber/low-fat diet intervention for early breast cancer patients.
Main Methods:
- Postulation of a mechanism involving nutritional factors, hormonal balance, and insulin resistance.
- Review of evidence linking abdominal obesity, bio-available estrogen, and breast cancer risk.
- Suggestion for an adjuvant randomized trial of a high-fiber/low-fat diet post-surgery.
Main Results:
- Insulin resistance, associated with Western lifestyle, may increase breast cancer risk.
- Abdominal fat deposits are markers for insulin resistance and increased bio-available estrogen.
- Abdominal obesity, even hidden, may indicate increased breast cancer risk from puberty onwards.
Conclusions:
- The Western diet and lifestyle contribute to insulin resistance, a potential driver of breast cancer.
- Hyperinsulinemia's effects may promote both the development and growth of breast cancer.
- A high-fiber/low-fat diet intervention warrants testing in early breast cancer patients.