In one sentence, describe what the following article is about:

To calculate the amount of calcium in your diet, you need to keep track of your food using a food journal. Basically, you write down everything you eat in a day, including the serving size. Then you can calculate the amount of calcium in the foods you ate. For instance, a cup of yogurt has 415 milligrams of calcium. Therefore, if you ate a cup and a half over the course of a day, you consumed 622.5 milligrams of calcium just from yogurt. If you're not 50 yet, you need about 1,000 milligrams of calcium daily. If you're over 50, your need increases to 1,200 milligrams daily. Limit intake to under 2,500 milligrams. While it's acceptable to take more than your daily minimum, you shouldn't get more than 2,500 milligrams of calcium between your diet and your supplements. Your doctor can help you assess whether you need a supplement based on your diet. She can also recommend the right kind of calcium for you and can look at whether a calcium supplement will interact with any of your medications or cause adverse affects for you. Some people are more dependent on calcium. For instance, if you have osteoporosis or at high risk of developing it, you need to be more careful about getting the required amount of calcium every day, as it helps keep your bones healthy.

Summary:
Calculate the amount of calcium in your diet. Know how much you need. Talk to your doctor about whether you need a supplement. Know your risk.