Vitamin D might prevent Alzheimer's, Parkinson and dementia. All of them are directly related to spike proteins. A bad flu could start the reaction.
Use of Melatonin. This report is on Alzheimer though they're all related.
https://onlinelibrary.wiley.com/doi/full/10.1111/jpi.12578 Regulation of Biomolecular Condensates in Neurodegenerative Disorders
https://www.mdpi.com/2076-3921/10/9/1483/htm I figured out why people have a reaction to Melatonin which is in my opinion(best guess.) Melatonin regulates Coenzyme Q10 which is the biosynthesis of amoebas.
melatonin was found to increase the transcription of the ubiquitin-activating enzyme, E1 (Coenzyme Q10)ubiquitin-activating enzyme, E1 which regulate embryonic protein biosynthesis of eukaryotic organisms such as amoebas.
If you have a high concentration of unwanted amoebas melatonin might make it worse.