Breastfeeding may reduce risk of heart disease in adulthood

Scientists have discovered another reason why breast is best — it can lower your blood cholesterol in later life, according to research from St George’s, University of London funded by the British Heart Foundation.

The study discovered that exposure to breast milk in the first months of life may reduce blood cholesterol levels and the risk of developing heart disease in adult life.

The findings are based on a review of data from over 17,000 participants (4,608 were formula-fed and 12,890 were breast-fed) showing adults who had been breastfed had a lower mean total blood cholesterol than those who had been fed formula. It concludes that early exposure to the high cholesterol content of human milk affects long-term cholesterol metabolism, which may modify risk of cardiovascular disease in later life.

The meta-analysis is to be published in the American Journal of Clinical Nutrition’s (ACJN) August edition.

Study author Dr Chris Owen, Epidemiologist at St George’s, University of London, is an expert in cardiovascular risk factors in childhood, and works in the Division of Community Health Sciences. He says: “The paper concludes that initial breastfeeding, particularly when exclusive, is associated with lower blood cholesterol concentrations in later life, compared to initial formula feeding.”

Dr Owen states that because there is substantial evidence to suggest that human milk does provide long-term, protective health benefits, breastfeeding should be advocated, when possible, as the preferred method of feeding in early life.

“This study provides further evidence that breast feeding has long-term health benefits. Apart from all its other effects, it appears to lower blood cholesterol in later life. The results also suggest that formula feeds should match the context of breast milk as closely as possible — any attempt to reduce the fat content of formula feeds could be counter-productive” said Dr Owen.

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