For sure, but so does heavy post-covid. It's a trade-off that's well worth it for her. It improved her memory and brain clarity a fair bit to the point that it's doable to get through the days hoping for a cure (or at least a way to get back to a normal life).

FWIW anxiety also results in exhaustion and brain fog, so I'm not surprised that it's had a positive impact in this way, it's just unfortunate that it's not without it's downsides.