Hi thanks for contacting HCM.
Yellow discolouration could be by
jaundice. ..
As he is having alcohol habit, there might be alcoholic hepatitis....
If care not taken there might be chance of development of
cirrhosis....
So consult him to gastroentetologist ....
He needs to investigate with USG abdomen , liver enzymes , protein estimation and PT like investigations.
He should limit alcohol drinking...
Always in morning give him carrot and spinach grined juice.
Fruit juice more...
Refined food less....
Non veg less, butter , cheese less.
Dandelion , turmeric in milk , broccoli , carrot , beet roots are some good food for liver.
If history of
blood transfusion ,unprotected sex then rule out
hepatitis b or c by
ELISA.
Take care.