What does a lack of calcium notably contribute to?

A lack of calcium notably contributes to rickets, which is a condition that affects bone development in children, leading to weakened and softened bones. Calcium is essential for maintaining healthy bones and teeth, and when the body does not receive enough calcium, it can result in impaired bone mineralization. This deficiency can result in deformities such as bowed legs, a distorted spine, and other skeletal issues.

Rickets occurs primarily due to deficiencies in calcium and vitamin D, making it crucial for children to have adequate intake of these nutrients during their growth years to ensure proper bone structure and development. The other conditions listed relate to different nutrient deficiencies or health issues that do not directly stem from a lack of calcium.