The study documented a positive dose response relation between alcohol and breast cancer. A woman average risk of breast cancer increases by 4% with each additional 10g/day of alcohol. Meaning that if a woman daily intake of alcohol is one glass of wine or beer would correspond to a risk value of 1, by increasing the alcohol intake to two glasses of wine or beer it will increase the risk of being diagnosed with breast cancer by 4%.
Moreover, apparently the number of years of exposure to alcohol intake also influences a woman’s risk of developing breast cancer, especially if starting drinking alcohol prior to first full-term pregnancy. Consequently the longer a woman has been exposed to alcohol consumption, the greater a risk she has to be diagnosed with breast cancer.
For more details of the study please read HERE.