Alcohol consumption (IMAGE) Duke University Caption UFF-PAM showed that alcohol caused significant increase in oxygen levels in the placenta, which lasted three minutes. Red indicates higher levels of oxygen. Credit Junjie Yao, Duke University Usage Restrictions Usage with credit License Original 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.