Educational only; not medical advice.
Maternal Diet Before Pregnancy May Influence Childhood Leukemia Risk
A study from researchers at the University of California, Berkeley suggests that women who eat more fruits, vegetables, and protein before pregnancy may reduce the risk of their children developing leukemia. The study included 276 mothers from Northern California who completed detailed questionnaires about their diets during the year before becoming pregnant. Half of the mothers had children diagnosed with acute lymphoblastic leukemia, while the other half had cancer-free children.
The findings, published in Cancer Causes & Control (August 2004), showed that higher intakes of fruits, vegetables, and protein were associated with a proportionally lower risk of leukemia in children. This study was notable because earlier research tended to focus on individual foods or supplements, whereas this analysis looked at the overall dietary pattern.
Certain foods—such as carrots, string beans, and cantaloupe—appeared to be particularly protective. These foods are high in carotenoids, which are precursors to vitamin A and act as antioxidants. The results align with broader research showing that diets rich in fruits and vegetables help protect against various adult cancers.
Protein-rich foods, including red meat, poultry, and beans, also showed a potential protective effect. These foods contain glutathione, an antioxidant peptide involved in DNA synthesis and repair and in the detoxification of harmful compounds.
“Leukemia is a very complex disease with multiple risk factors,” said Patricia Buffler, professor of epidemiology at UC Berkeley and head of the Northern California Childhood Leukemia Study. “What these findings show is that the nutritional environment in utero could be one of these factors.”
