Breast milk is the best food for babies.

Or is it?

Nursing your baby has numerous benefits, including decreased risks for allergies, diabetes, cancer, infections, and arthritis.

Colostrum, which comes in before the milk does, is the first food a newborn gets, and it passes on antibodies (immunoglobulin A) and leukocytes (which destroy disease-causing bacteria and viruses), and it also seals the infant’s highly permeable digestive tract with a barrier which prevents foreign substances from penetrating it. It is a safe and natural vaccine, the way that nature intended it.

However, pesticides, heavy metals, and other persistent organic pollutants accumulate in human milk, leading some researchers to question whether the risks of exposure to pollutants in breast milk outweigh the benefits.

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