Combination of significant weight gain and late motherhood greatly increases risk of breast cancer, study finds

Women who experience significant weight gain after the age of 20 and either have their first child after the age of 30 or don't have children are almost three times more likely to develop breast cancer than those who give birth earlier and whose weight remains relatively stable, new research from the UK being presented at the European Congress on Obesity (ECO 2025) has found.

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