Thank you for posting your query.
Your father needs evaluation by a neurologist
Weight loss needs to be evaluated- whether it is due to poor intake of food, diabetes, thyoid problems, any infections or malignancy. Then, the underlying cause can be treated.
Regarding cerebral atrophy
, it can not be reversed. However, if your father has memory loss
and dementia, he would benefit from medications such as donepezil, memantine, rivastigmine
Dr Sudhir Kumar MD MD (Neurology)
Senior Consultant Neurologist