We've tried upping his protein intake, adding whole milk/butter whenever possible. He's never hungry and it takes everything in him just to eat dinner. We've tried adding as many liquid foods as they're easier for him to take (protein/milk or juice combos) and add a lot of calories. Yet, he's 88-years-old and still losing weight - around 1 - 2 lbs per week! I should add he has thrush/thrashers from the last sinus infection which caused a fungal infection in his mouth. He's also currently taking medicine for anorexia - it's supposed to make him hungry I guess. He DOES eat (Grandma makes sure of that), but he's just so full always. Please, any diet suggestions on ways to add more calories and possibly types of food that can really be helpful to thin/ elderly people. His doctors just keep telling him to eat steak... and have yet to recommend any dieticians, etc (NW Iowa but can travel to Central IA).