These 30 Remarkable Body Features Are Very Rare…and Fascinating

Some people have denser, stronger bones.

You almost certainly don’t know what “low-density lipoprotein receptor-related protein 5 (LRP5)” is, but you don’t need to in order to appreciate it.

It’s a protein that replaces bone matter as older cells die off.

If you don’t have enough, you can get osteoporosis.

But with a lot of LRP5, you enjoy more bone density, which means stronger bones.