Be careful with cans
There is strong evidence to show that BPA causes cancer in mice, but studies on humans have been ethically difficult. Still, it’s reasonable to try to avoid the chemical when possible. Plastics are also worrisome for containing BPA, although many are now labeled BPA-free. Another unlikely source, though, is the lining of cans.
In a recent study from Stanford, researchers found people who ate one canned food item in the past day had a 24 percent higher concentration of BPA in their urine than people who didn’t. Eating two or more canned food items led to a 54 percent higher concentration. Miriam Rotkin-Ellman, MPH, a senior scientist with the Natural Resources Defense Council (NRDC), advises avoiding canned products, especially those with a high acidity, like tomato products.