| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | rickets | Tropical countries | Rickets is less common as there is abundant sunshine throughout the year, providing ample opportunity for natural vitamin D synthesis in the skin. | 1 |
| 2 | rickets | Tropical countries | Rickets is more common due to limited sun exposure and poor nutrition. | 1 |