No. | Name of Lifestyle | Third Class | Second Class | First Class | Type | No. of Studies |
---|---|---|---|---|---|---|
1 | carotenes | Vitamin A | Vitamin | Food composition | No statistical significance factor | 2 |
2 | Pro-vitamin A carotenoids | Vitamin A | Vitamin | Food composition | No statistical significance factor | 1 |
3 | Retinol | Vitamin A | Vitamin | Food composition | No statistical significance factor | 5 |
4 | Retinyl palmitate | Vitamin A | Vitamin | Food composition | No statistical significance factor | 1 |
5 | serum retinol | Vitamin A | Vitamin | Food composition | No statistical significance factor | 1 |
6 | Vitamin A | Vitamin A | Vitamin | Food composition | No statistical significance factor | 2 |