 We look at causes by lifestyle. So are you exercising? Are you eating well? Are you taking vitamins? What's your stress level? All of these things. Basically, and I see this a lot from some of the functional medicine tests that we do, it's oxidative stress or oxidative damage. There are a lot of things that might cause that damage to a cell. And those are one of the things when you're like, hey, you know what we're looking at?