Is breast cancer risk associated with alcohol intake before first full-term pregnancy?

Alcohol use—irrespective of the quantity—may precipitate the development of breast cancer in women, especially in females who have never been pregnant.

This study evaluated alcohol drinking and its relationship with the development of breast cancer in women before first full pregnancy. Researchers surveyed the alcohol ingestion habits of 13,630 women for a period of 16 years. During the course of the study, a total of 651 participants had breast cancer. 

Researchers discovered that any level of alcohol consumption before first pregnancy resulted in a hike in breast cancer risk in women. This study suggested that women who want to improve their chances of fending off breast cancer should avoid the consumption of alcoholic beverages.