Effects of Heavy Drinking Over Time (IMAGE) Veterans Affairs Research Communications Caption Heavy drinkers develop tolerance to alcohol over time and may be able to perform certain tasks fine while intoxicated -- but that doesn't apply to more complex tasks like driving, suggests a new study. Credit Mitch Mirkin Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.