Talk:Timeline of vitamin D
Jump to navigation
Jump to search
The table below shows recommendations for vitamin D for adults in Canada and United States from 1968 to 1997.[1]
| Country and date | Age groupings (years) | Recommended value (μg (IU)) |
|---|---|---|
| United States | ||
| 1968 | 18-22 | 10 (400) |
| 22-35 | 10 (400) | |
| 35-55 | None given | |
| 55-75+ | None given | |
| 1974 | 19-22 | 10 (400) |
| 23-50 | 10 (400) | |
| 51+ | 10 (400) | |
| 1980 | 19-22 | 7.5 (300) |
| 23-50 | 5 (200) | |
| 51+ | 5 (200) | |
| 1989 | 19-24 | 10 (400) |
| 25-50 | 5(200) | |
| 51+ | 5(200) | |
| Canada | ||
| 1964 | "Adult" | None given |
| 1975 | 19-35 | 2.5 (100) |
| 36-50 | 2.5 (100) | |
| 51+ | 2.5 (100) | |
| 1983 | 19-24 | 2.5 (100) |
| 25-49 | 2.5 (100) | |
| 50-74 | 2.5 (100) | |
| 75+ | 2.5 (100) | |
| 1990 | 19-24 | 2.5 (100) |
| 25-49 | 2.5 (100) | |
| 50-74 | 5 (200) | |
| 75+ | 5 (200) | |
| Canada and United States (DRI) | ||
| 1997 | 19-30 | 5 (200) |
| 31-50 | 5 (200) | |
| 51-70 | 10 (400) | |
| >70 | 15 (600) |
- ↑ Whiting, Susan J.; Calvo, Mona S. (1 February 2005). "Dietary Recommendations for Vitamin D: a Critical Need for Functional End Points to Establish an Estimated Average Requirement". The Journal of Nutrition. 135 (2): 304–309. doi:10.1093/jn/135.2.304.