| Obligatory | Must not donate. |
| Additional Information | Diabetes insipidus is an unusual condition (about 1 in 25,000 people are affected) where the body cannot retain enough water. It is very different from diabetes mellitus (sugar diabetes). Because of the difficulty in maintaining a normal fluid balance it is considered unwise for a person with this condition to be a donor. |
| Reason for change | 'Additional Information' has been added. |
| Donor Information | If you wish to obtain more information regarding a personal medical issue please contact your National Help Line. Please do not contact this web site for personal medical queries, as we are not in a position to provide individual answers. |