Coffee Effects on Breast Size

Coffee Intake Influences Breast Size by Stef De La Cruz More cups of coffee lead to smaller "cup size" Women are having second thoughts about sipping their cup of joe after a study linked coffee intake to smaller breasts. A 2008 study published in the British Journal of Cancer went viral as it connected coffee intake with breast size.

One enzyme is related to both coffee and estrogen metabolism in some women, specifically those born with a specific variant of the CYP1A2*1F gene. Armed with this fact, a group of Swedish doctors led by Helena Jernstrom investigated the relationship between caffeine and breast size in 269 women with a high risk for breast cancer. Ironically, even as coffee decreases breast size, it also decreases a woman's risk for losing her breasts altogether. But what exactly is present in coffee that influences breasts in the first place?