Breast and Prostate cancer. Reduced reproductive function. Insulin resistance.Type 2 Diabetes. Obesity. And BPA alters the expression of at least 200 genes. The implications are clear: BPA disturbs every biological system in which is has been tested in animals – even in low doses. But the question still remains: If BPA exposure raises the odds of risk factors for heart disease (and obesity,m diabetes, insulin resistance, and so on) in animals, can ongoing exposure to BPA cause heart disease in humans?