I'm so tired of fighting with my brain

I've been struggling a lot lately with worries of losing hair or teeth. I'm constantly looking up gum recession and hair loss, comparing it to my own hair and teeth. It's becoming a major stressor for me. I know I'm probably not losing either, but the What Ifs keep running through my mind. I'm so sick of it. It reminds me of before where I spent weeks worried I had lice or bed bugs. I assumed all the little bumps on my legs or itches of my head were some kind of bug eating away at me. It's so annoying.