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Milk

The milk you’re drinking may not be doing your body good: Dairy products account for a reported 60 to 70 percent of the estrogens we consume through our food. If that seems like a shockingly large number, it’s mainly because milk naturally contains hormones passed along from cows. What worries some experts is that about 17% of dairy cows are treated with the hormone rBST (or rBGH), which stimulates milk production by increasing circulating levels of another hormone called insulin-like growth factor (IGF-1).

Next: More about organic milk