A bottle a day probably won’t keep the doctor at bay. Americans are drinking less than ever, with just 54% of US adults saying they consume alcohol, according to recent Gallup polling, marking a record low for the second year in a row. But for those who do indulge, a new study has a sobering warning: It may take far less booze than you’d think to raise your odds of dying from nine different types of cancer. Researchers analyzed more than three decades of US data from the Global Burden of Disease Study, which tracks the toll of hundreds of…