Arte my sister was having confusion spells and it was getting so bad, headaches etc she went to the drs scared they were going to say she had a brain tumour...turns out she was anaemic (LMAO at her Dr google episode) but the symptoms were that bad, it was really affecting her functioning. She was veggo for a few years & obv didn't keep an eye on the iron.

ETA you can take fish oil too - the long chain fatty acids can't hurt with the cognitive functioning & good for your health otherwise too.