Proportion of which should be increased in diet to improve strenght and growth of bones

Options

A. Vit.D,`Ca^(2+)` and Vit.K
B. Vit.D,`Ca^(2+)` and iodine
C. Vit.D,`Ca^(2+)` and Vit.A
D. `Vit.A, Ca^(2+) and Zn^(2+)`

Answer

To improve the strength and growth of bones, the diet should include an increased proportion of the following nutrients:

1. **Calcium**: Calcium is a crucial mineral that forms a significant part of the bone structure. It is primarily found in the form of calcium phosphate in bones, which provides strength and rigidity.

2. **Vitamin D**: Vitamin D is essential for the absorption of calcium in the body. The active form of vitamin D, known as calcitriol, helps in the formation of proteins that bind to calcium, facilitating its incorporation into the bone matrix.

3. **Vitamin A**: Vitamin A plays a vital role in cell differentiation, which is essential for bone growth and development. It helps in the maturation of osteoblasts (bone-forming cells), contributing to the overall health and strength of bones.

Thus, to enhance bone strength and growth, the diet should increase the intake of calcium, vitamin D, and vitamin A.