Sure, it was iron overload [1]. I thought I could "eat like an adult" there and catch up on leafy greens which I always hated. But it turns out I hated them because my body can't process out iron. It kinda turned on its head my idea of "trying to be healthy" which is why I didn't mention the specific thing.
[1] https://nautil.us/issue/67/reboot/iron-is-the-new-cholestero...