Rich especially - have you ever looked at ferritin, RBP, and/or vitamin A as relates to methylation? (maybe not, but maybe you have some insight anyway?) Sorry I cant type so I am going to add this as edits. Has anyone noticed blurred vision after eating protein? I bought a protein supplement and ate that (no meal) and it caused blurred vision for 1.5 hours. Doesn't seem like that would be caused by blood sugar. I take 2g TMG which is supposed to prevent postprandial homocysteine elevation). I find this possible scenario(?): 1. improper methylation causes homocysteine. homocysteine theorized to degrade (add OH) retinol. (CBSers found to be deficienct in Vitamin A even after supplementation) 2. Retinol deficiency causes RBP deficiency. 3. RBP used to transport ferritin. In insufficient RBP, ferritin levels fall. Ferritin moves to joints (?) and/or serum Fe (seems like both in my case) or ...? 4. Low ferritin even with normal Hb causes low thyroid (TSH > 1.9) 5. Low ferritin potentially also causes low cortisol (idk, i did not measure cortisol) 6. Low ferritin causes gasping for air even if Hb normal? (Possible?) 7. Low ferritin lowers MCV value and obscures folate deficiency (applies?) Any thoughts? I cant easily look at RBP myself since not offered by Labcorp and no dr. appt until end of month. Thanks!