Final answer:
The Dietary Reference Intake (DRI) for calcium for both men and women aged 19 to 50 years is 1000 milligrams per day.
Step-by-step explanation:
For women and men in the 19- to 50-year-old range, the calcium Dietary Reference Intake (DRI) is 1000 milligrams. This level of intake helps to ensure proper bone health and plays a vital role in other physiological processes. Calcium is not only the most abundant mineral in the human body, required for bone mineralization and overall health, but also in regulating crucial bodily functions such as muscle contraction and nerve impulse conduction. Sources of calcium include dairy products like milk and cheese, as well as green, leafy vegetables and nuts.