"So, “everyone” gets shorter with age and this phenomenon is usually chalked up to compression over time. It is said that your height decreases because either the discs between your vertebrae have flattened out or, your bone density decreases with age, creating weak bones that can no longer stay upright so they curl forward. This seems to be the general understanding of why we get shorter as we get older. However, things are not always as they appear.
What I’m about to explain here is how someone can measure as shorter without any change in their mass — only in how their mass is oriented. I’ve failed, many times, to get this point across to large crowds of clinicians and they always end up looking at me like I’m insane. How can someone possibly be shorter if some body part hasn’t changed in length?
her blog to read the rest.