.Food sources of calcium
| Food and serving size | Calcium content (mg)* |
| Whole or skimmed cows’ milk (200 mL) | 240 |
| Calcium-enriched soy milk (200 mL) | 240 |
| Hard cheese, for example, cheddar (30 g) | 220 |
| Yoghurt (120 g) | 200 |
| Sardines, with bones (½ tin) | 258 |
| Broccoli (2 spears) | 34 |
| Kale (67 g) | 100 |
| Orange (1 medium size) | 75 |
| Typical multivitamin/mineral supplement | 200 |
*Note that the RDA is 700–1000 mg/day.
RDA, recommended dietary allowance.