Hi all, my dad has recently been told he has lung cancer, he’s had a biopsy and is awaiting the results to stage it. 
but he isn’t eating, and is feeling sick all the time. He has lost a lot of weight really quickly and I’m worried that he’s going to become even more fragile. 
Just after some advice please on what to do about the not eating, and who I should speak to about it. Feel a bit lost with it all. 

thanks in advance.