Identify a major source of calcium in the diet.

Dairy products are considered a major source of calcium in the diet due to their high content of this essential mineral. Calcium plays a vital role in various bodily functions, particularly in building and maintaining strong bones and teeth. Dairy products such as milk, cheese, and yogurt are not only rich in calcium but also provide additional nutrients such as protein, vitamin D, and phosphorus, which together support overall bone health.

In contrast, while fruits, whole grains, and nuts can contain some calcium, their levels are significantly lower compared to dairy products. Moreover, the bioavailability of calcium from these non-dairy sources can also be lower, meaning the body may not absorb it as efficiently. Therefore, including dairy products in the diet is a practical and effective way to ensure adequate calcium intake.