Plasma concentrations of vitamin C and β-carotene at baseline and on day 24 after 3 weeks of intervention (mean and SD)
| Plasma antioxidant | Vegetable | Vitamin | Placebo |
|---|---|---|---|
| Vitamin C (baseline, μm) | 74.8 ± 19.5 | 62.9 ± 13.9 | 67.3 ± 17.3 |
| Vitamin C (day 24, μm) | 78.5 ± 13.6 | 71.3 ± 12.0 | 21.1 ± 11.8 |
| β-Carotene (baseline, μg/100 ml) | 18.6 ± 9.5 | 17.6 ± 10.9 | 19.7 ± 14.5 |
| β-Carotene (day 24, μg/100 ml) | 30.9 ± 15.7 | 47.5 ± 18.1 | 10.4 ± 8.5 |