Alcoholic drinks should carry cancer risk warning labels, U.S. Surgeon General Vivek Murthy said in a report Friday.

The report cites a direct link between alcohol consumption and at least seven types of cancer, including of the breast, colorectal, liver and mouth. An estimated 16.4% of total breast cancer cases are linked to drinking alcohol.

There are about 100,000 alcohol-related cancer cases and about 20,000 alcohol-related cancer deaths in the U.S. each year, the report found. Alcohol is the third-leading cause of cancer in the U.S., after tobacco and obesity.

While research has shown a link between alcohol and cancer, “the majority of Americans are unaware of this risk,” Murthy said in a statement.