Why is it important to measure your height?

You (and your doctor) should measure your height so you have a baseline measurement, because it's a vital sign of sorts. Many people think they know their height, but the reality is that they're probably off by an inch or two. If you know precisely, you'll be able to tell if you're losing height due to osteoporosis (or if you're getting taller, which unfortunately isn't too likely to happen).