Agree. Also testosterone. I was lucky enough to have lab work before and after getting covid twice. My T numbers halved in less than a year. I was still within the “normal range” so it took some arguing with the doctors to get a prescription for a very low dose. Within 24 hours of starting, I felt like myself again. Brain fog was gone, energy was back, my mood rebounded. No negative side effects thus far. I had tried a lot prior to starting: intense therapy, ketamine, lots of exercise, losing weight, supplementation, lots of lab work. Nothing was as impactful as getting that jab.

Side note: the normal range for T is so wide that it’s meaningless.