Deer Antlers Inspire a New Theory on Osteoporosis (image) FECYT - Spanish Foundation for Science and Technology Share Print E-Mail Caption This is three broken antlers and an intact one. The weakening is due to manganese depletion. Credit IREC Usage Restrictions None 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.