Hi Anon, I have to work to keep my weight up now to. I just eat all the things type 1's and 2's should eat which are the lean proteins, veggies, fruits, a lot of salad with chicken in it, low sugar yogurt ( when going for exercise only, has fructose), cheese etc... By doing this and making my portions small and exercising, the weight stays stable but seems close to being to thin which is why I bulk up when I can.
Your SO also has a carb counting formula right? Be sure he clears anything he does with the DR. first. He should ask the Dr. what to indulge in to get some weight back on. He can also see a dietitian and they will certainly notice he looks thin and have all the choices of ideas. The ones I list works for me and I am on Lipitor to help lower Cholesterol and as a preventative medication for the Diabetes to avoid heart problems as long as possible since that problem can be more common for a Diabetic.
My Dr. told me to increase fats to a degree (no overly done) and higher calories. If I take my diet and just increase portions it has to be factored into the mealtime insulin dose.
He can add mixed nuts to the diet. I get them from Trader Joes and they have dried cranberries in with the nuts. Makes for a great snack and has fat. He can have those with slices of cheese in moderation and sliced apples in moderation. Avacodos in the salad is a good fat. If he can fit whole milk into the plan that would be a fat but be sure he watches the Milk portion since it does spike the blood sugar. For breakfast, one that would help out for bulk would be 1/2 cup Oatmeal with Milk instead of water with light butter on top and sprinkle some berry granola on it. Make sure he gets a Morning Star veggie sausage for the protein part and add an egg occationally.
Make sure he is careful with the Oatmeal and that he tests his blood sugar.
Oatmeal is not ok for everyone and if he is adding the milk for fat that is double whammey on the sugar content. Usually as a type 1 we can figure out how to get that into our meal plan. Make sure he factors enough insulin for that so the 2 hour blood sugar does not exceed about 160. I am sure he is familiar if he takes Humalog fast acting insulin with meals. If not, what type of insulin is he on? A mix? Or a 24 hour with the mealtime insulin? Of course all depends on you SO's overall blood sugar control, dietary habits and exercise plan. Exercise is still good for building muscle and protein also helps with that and weight gain happens through muscle building. Let us know how it is going! krhudson