The exact causes of breast cancer aren't fully understood. However, there are certain factors known to increase the risk of breast cancer?
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Hi lybrate-user, I appreciate you seeking clarification. Well, as you understand correctly, no definite cause is known. However, p53 gene over-expression, excessive fatty diet, obesity, diabetes, fibrocystic breast disease, heredity/ inheritance of mutated breast cancer genes 1 (BRCA1) and 2 (BRCA2), smoking, alcohol intake, infertility, fertility treatment, estrogen therapy/ hormone replacement therapy (long term) in post menopausal women, delayed age at first pregnancy, nulliparity (not having child), early menstruation, delayed onset of menopause, lactating mothers not breast feeding, iron overload, exposure to ionizing radiation, sedentary lifestyle, antipsychotic drugs, depression, exposure to MMTV virus, high glycemic diet, silicone breast implants, exposure to xenobiotics, etc all are a few major things that can potentially increase the risk for breast cancer. Hope this clarifies. Take care.
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