What if there was a person who lost a lot of weight in a short period and as part of that developed some eating habits that might be good or bad. What if he was concerned that even though he is not gaining weight, he does not always feel good.

Lots of vegies, lots of fruit, some fish, not many calories/day.

Breakfast = Danon 80 cal yogurt + an apple and sometimes another fruit
Lunch = 2 cups spring mix salad, 1 cup frozen vegies, one portion of fish (100 cal), another apple or other fruit like plumb
Dinner = sometimes repeat of lunch some times small servings of variety of foods like pasta, fish, chicken, etc. When going out, smaller portions of what ever is served.
Desert = very rare
Beverage = Lots of coffee, some tea, lots of soda. Known to be reducing sodium level too far.

Between 800 - 1200 cal/day
Middle aged, 160 lbs, 6'2.5"

What can he do? What should he do?

Should add, fair amount of isometric exercise, 330 push ups 3/week, 250 stomach crunches 6/week, 350 calf extensions 6/week, 2 - 3 miles walk 3/week.

Being under weight myself I have wanted to know the same thing. There seems to be alot of advice and products for loosing weight but not as much for putting on weight.

I think the best thing is to try to eat as healthy as possible, I use to not have a very big appetite at all so felt that I needed something extra to make sure I was getting enough daily nutrients.

The best products I found are available at pharmacies, sustegen and ensure are multivitamins that come in powder form. They are NOT meal replacements but something extra that you might make into a drink or smoothie with or in between meals. They can also be added to some recipes or to your breakfast cereal.

I think both brands have a hospital strength version which is more concentrated and great for people who are ill or elderly or just too busy or don't eat enough variety of healthy foods.

Another type of product that can help you gain weight is protein powders.

Thanks for the response. My real problem is that I fear I am being unhealthy. I switch between starving to bloated to constipated so diarrhea. I think Apples may be part of the problem.

I worry that I may be anorexic.