Hi Anna, sorry to hear. Your situation is kind of unique, being that there are multiple parts. Really, Duz did a good job with his answer. Really, I would say liquid vitamins would probably be easier to absorb. Sometimes it's not how much is consumed, but rather how much is absorbed, if that makes sense. Ensure - I am not a fan of, except for its non-lactose component. This is why I wanted to write a blog on fitness, but then I injured my shoulder. Now it's getting better. Ensure IMO can help, but it's a small part. I have heard of people getting sick by drinking too much of it. I myself was included in this. Fish is by nature a natural anti-inflammatory. It's high in protein. Putting olive oil on fish can add calories and flavor. Yogurt? Yes. However, too much can cause some liquid. So I'd say a cup a day. Applesauce? Yes. Bananas? Yes. These will help with absorption. Realistically, there can be so much played into this, so let me hit this from different angles, okay? From an absorption standpoint, the foods I mentioned are good. They are healthy foods as well. Other safe foods (most people do okay with) are chicken, rice, and potatoes.
Let's hit this from another angle. The human body has a homeostasis (where it likes to stay). When it gets used to losing/gaining, it thrives off it. Take, for example, a healthy yet overweight woman. She exercises, but is discontent. So then she crash diets. When she eats normally again, her body gains weight. Then you hear her say, "I just gain the weight back" or "I can't lose weight." Well, in that example, her homeostasis is used to being her weight, so her body wants to be that weight. Follow? So when I used to train people, I paid attention to homeostasis and metabolism. So really, if the body is swinging around, the homeostasis is raffled. So it's great to start maintaining, then gaining. So the body has a platform to build from.
Anxiety/depression? What is really going on? Well, adrenaline is the hormone that speeds up heart rate by definition, clinically. So when someone has anxiety (smaller people usually lose weight, while heavier, bigger-boned people tend to gain), their heart rate speeds up. Well, so does their breathing. Maybe oxygen is slightly deprived from the brain, causing "dizziness." Let's take this up a notch. Well, if the heart is faster and breathing is faster, so will the G.I. system, as Duz was referring to. Actually, it can speed up 3-5 times faster. See why anxiety and these types of surgeries don't get along? So, by lowering any anxiety (don't focus on it, or it may cause more), it can help with absorption as well. Also, anti-depression pills, as Duz referred to, can have a weight gain-like effect. I took some off-label for sleep while bulking for weightlifting. I went to the doctor a few months later, and he couldn't recognize me. He kept looking for me, and I was not far away, lol. I packed on muscle and weight. All through the practices, I believe. Recovery, diet, and micro-tearing and stimulating the CNS (central nervous system), but not overloading the CNS. Many lifters overstimulate the nervous system by lifting too long or with too much workload. I don't expect him to be lifting, so I will stay away from that.
Now, pure diet: Understanding... Take the opposite of the heavy girl with homeostasis I mentioned earlier. Turn it around, a guy who is trying to gain weight but having trouble. You need to add 500 calories a day, so 3500 a week (500x7=3,500) to gain 1lb a week by traditional dieting guidelines. However, with a higher absorption rate and a slower metabolism due to reduced anxiety or corrected depression, it can be less. However, they add in what's called an injury factor, so another 200-300 calories. Now, this is just for your pure understanding (this is a healthy person). However, let's up it a notch. So you want the person to maintain, then gain. However, the body might not feel hungry or be able to eat because of the newfound raffled homeostasis, and the stomach is not used to eating as much. And yes, anxiety can play a factor. So slow and steady. Like I said, simply adding olive oil to fish can increase 100 calories and add some extra fat. Adding yogurt to a small lunch can add 100 calories and some protein. I can give you a mock diet, and you can take it for what you want. No caffeine. No milk. No pork. No ham. Again, a mock:
Breakfast:
Toast two slices - yes, with the burnt part (it can help with enzymes).
Anything else tolerated (fruit), oatmeal, etc.
Lunch:
Sandwich, all-natural peanut butter and jelly or turkey (close to the bone). Closer to the bone, fewer preservatives.
All-natural potato chips
One cup of yogurt
1/2 banana - cutting off those ends, lol.
Something snackish, Little Debbie
String cheese (all-natural, organic)
Dinner:
2 fish fillets, with garlic and olive oil (eliminate garlic if it's not tolerated)
2.5 servings of rice, all-natural
3 potatoes
Snack 4: Ensure
Snack 5: Pretzels, etc., etc. - stay within 200-500 calories, don't overload at night.
Protein sources I like:
- Whey protein acts quickly in the body, but also leaves the body quickly. Egg white protein powder is more slowly digesting. It's probably all-natural. I like egg white protein!!!!!! Maybe see if adding half the serving size of egg white powder, stir it in an Ensure. Vanilla is probably better because of the egg white flavor. Now you've got yourself a high-octane drink. Filled with vitamins and amino acids.
Last thoughts: What I wrote is from an opinion. I could be off via the conditions. Also, you can scale down anything. Instead of two fish fillets, fish 1. Instead of fish, chicken? Etc. The diet was a mock diet to help gain. Also, I'd say liquid multivitamin over pill for absorption - ask the doctor (or show him this). Also, the egg white protein might help so you can reduce Ensures and get a better drink by mixing it with an Ensure. I hope this helps you or anyone else. You can always feel free to keep in contact on Facebook. My name is Rick Bitty. If you have any more questions, if you find this helpful, feel free to contact me here too. Good luck. You seem like a good person standing next to him through everything. Oh, I forgot... G2 seemed to sit well with me. Also, Propel. However, flavors like strawberry and peach didn't. Also, I see some have the same problems with those fruits, strawberry and peach. Also, for blockage problems, maybe some fiber. I hope this helps.