Not Eating

My dear father-in-law used to be a extremely choosy eater..with special craving for all those deep fried stuffs. Prawns and crabs are his favorites. He does not care much rather he is ignorant whats not all those high calories, high protein, high sugars etc, etc. So long as he likes it, he will eat his heart out on that particular food. He has good set of teeth and admirably strong enough not only to tackle all those big, hard chunky shell.. and also tiny little groundnuts which he likes to munch on too. He has a taste bud of extreme..very salty and also very sweet!

Those days, he had good appetite and can eat a lot..2 big bowl of rice. At home, he could finished 1 bowl of rice and stop then had another bowl of rice with an interval some 30 minutes or more in between.Funny way of eating.. probably so doing will not be labeled as a 'great' eater?
Munching tit bits while watching television..every now and then..Hardly ever see his mouth at rest..while sitting on his favorite rocking chair. Every weekend, while doing our marketing, we used to buy tit-bits, biscuits, groundnuts, etc. etc. and stored into air-tight tins. Then he could just take/eat whatever and whenever he likes.
However lately, he had not been eating well...Eating very little. It had been a tough time getting my dear father-in-law to eat. He had stop his munching tit-bits habits..or he has forgotten?..or he has no appetite?..or he is just plain lazy about eating? Most of his main meals..be it breakfast, lunch, or dinner is only half finished and left to waste. Even to drink water.. he need to be reminded always..It is sometimes really annoying to nag him to finish off his meal/drinks. The rate he is going...instead of dying because of his frail health, he could ended up dying because of starvation and malnutrition.