How much calcium should a vegetarian eat?

Vegetarianism is a broad category, which includes various different versions. Some vegetarians do consume dairy products such as milk and cheese, which are a good source of calcium. Stricter forms of vegetarianism may indeed result in a diet that is deficient in calcium, although in such cases it is certainly possible to take a calcium supplement such as a dolomite pill, or an oyster shell pill. I would add that nobody COMPLETELY lacks calcium. Anyone who has a skeleton has some amount of calcium, and that includes everybody who is alive.