| Study Location | Study Size | General Findings | Reference: Primary Author |
|---|---|---|---|
| Canada | 96 | Physiologic amounts of multiple vitamins improves immunity and decreases infection duration in elderly | Chandra |
| United States | 88 | 200 IU vitamin E significantly improves immune response in healthy elderly | Meydani |
| United Kingdom | 2,633 | Dietary vitamin E inversely associated with total IgE levels | Fogarty |