https://www.telegraph.co.uk/science/2020/01/05/alzheimers-disease-could-cured-shining-light-directly-brain/?fbclid=IwAR1gsIrcllbffnil-gH3yvkbxHnjrARcDIlfBXc4SrEIcdS_t9Y16NqIWss

Alzheimer’s disease could be reversed by shining light directly into the brain through the nose and skull, scientists believe.