Calcium is important for our health, but it's not just about how much is in our food - it's also about how well our bodies can use it. Scientists studied Caco-2 cells in a lab to see how well they can absorb calcium from different foods. They found that these cells can help us understand how our bodies absorb calcium and how other nutrients in food can affect this process. This research can help us make better choices about what we eat to get the most out of the calcium in our diets.