The study was a global look at alcohol consumption and its link to cancer. As Americans are reportedly raising a toast more than ever, one study is raising the alarm that alcohol consumption has been linked to nearly 750,000 cancer cases in 2020, according to CBS News. The study published by Lancet Oncology last month found that over 4% of all new cancer cases in 2020 were caused by alcohol consumption. Most cancers were linked to people who have more than two alcoholic drinks a day, while more than 100,000 cases worldwide were in people who averaged less than that, the study said. "Alcohol is an irritant. It irritates the lining of our mouth, of our throat, of our stomach. As our body tries to heal, sometimes it heals in abnormal ways that can lead to the very beginnings of cancer," said Dr. David Odell, an oncologist at Northwestern Medicine told CBS News.