Dr. David Jenkins (image) St. Michael's Hospital Share Print E-Mail Caption The most commonly consumed vitamin and mineral supplements provide no consistent health benefit or harm, suggests a new study led by researchers at St. Michael's Hospital and the University of Toronto. Credit St. Michael's Hospital Usage Restrictions Please credit St. Michael's Hospital. Share Print E-Mail 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.