Hi welcome to HCm
I Have gone thru your query regarding your dad's multi health issues . I can understan your concern .
Dear , It seems that he has something serious on his mind which are disturbing him and telling upon his physical health also .
as you know mind and body are interrelated . If body is sick mind dosn't work properly and worried mind , physically makes you sick
The most important thing to remember when caring for an adult with memory issues is to give them independence in a respectful manner. Finding tasks for them, keeping their mind busy, and rewarding them for a job well done will promote a desire for mentally stimulating activities. Your love and care will reverse the situation for betterment
Having a healthy lifestyle, staying mentally active, and participating in social activities may help maintain mental function or postpone its decline .
Intake of balanced diet containing all essential nutrients ,fiber,
vitamins ,minerals in natural form, lot of water , and
yoga postures to detoxfy and strengthening ,stretching of arms and legs and whole body & pranayam -deep breathing &
meditation help to acquire wellbalanced body and mind .
It is advised to see your doctor for further guidance .
Hope this helps solves your query .Take care .All the best .Wish he Gets well soon .
Don't hesitate to get back tf have any further query .