I get daily e-mails from a parenting website and they recently sent me this so I thought I'd share

"Now that your baby is eating some solid foods, fresh is usually best. However, according to the American Academy of Pediatrics, beets, carrots, collard greens, and turnips contain large amounts of nitrates in some parts of the country. Nitrates can cause a type of anemia in your baby. Even though you can't personally test the vegetables in your area, rest assured that baby-food companies take precautions not to use vegetables high in nitrates. So if you want to feed these vegetables to your baby, it is safest to buy commercially prepared jars."

I got it from: (information removed in compliance with ehealth's tou).