The questionThe question is actually about myself, I'm getting ready to turn 64 im a disabled Vet and I have A lot of health issues, I am also on a lot of different medications, I have stage 3 COPD And in the last 4 to 5 years I have lost over 60 pounds, I have asked numerous doctors and went through many tests and still have not got the answers I'm looking for? They claim my metabolism is so high That I cannot gain any weight, At one time they said I have an overactive thyroid and I was taking medicine for it but it did not help at all, I have tried so many products from gain weight protein mix shakes, boost, and many other brands of breakfast drinks, I eat a lot of protein, meat, chicken and rice, Peanut butter, Ect.. And foods With tons of calories, I also consume a lot of sugar But I am hyperglycemic I have low sugar So that's not a problem for me, At 1 time I weighed a 180 pounds but held steady around 170, Now I Weigh less than I did in high school, around 125 pounds, If anyone can come up with some real ideas that may help please let me know? I will try anything.
My own partner weighs only about 130 and has severe GERD and eats little. He doesn't gain even with the products you mention. His doctors tell him he is the healthiest 84 year old they have; no plague in his arteries and perfect balance.
In age you need VERY little to sustain life. Most seniors eat less and less and less and they live on and on.
I wouldn't over worry this. Do the best you are able, enjoy what you eat, and if your doctors have no major concerns re yoiur weight then you should not either. If they DO have concerns they can send you to a nutritionist.