2700 Calories is totally insane!

Nuts are super calorie dense.

I commend you young man. I know that aging out is not easy---all of a sudden you're suppose to be an adult and figure it all out. It appears you are on the right track with school and work, and I know how difficult it can be to eat right with a busy schedule like that. Try preparing several meals on Sunday when you are free---maybe a big pot of beans or spaghetti & meat sauce or baked chicken and rice---and that would take care of a few days of lunch and dinner. Also things like stir fry veggies are quick and available in the frozen food section. Just add some chicken or shrimp and you will have a full meal. White potatoes and sweet potatoes can be popped in the microwave for another quick and satisfying meal---just add toppings. Hope this helps. I wish you much success in life. Also since you are off on Sundays, find you a good church--- there might be some women there who will invite you to dinner!! lol

When I had to eat 4-6k a day, I did so by eating a serving of almonds or another nut every hour on the hour without considering whether I was "hungry" or not. It's a small enough thing... Like 20ish almonds give or take... so it doesn't make you feel stuffed, but comes with 100+ calories a serving.

2700 calories is really not difficult to hit through normal food consumption if you eat consistent meals, larger portions and use full fat products. However, I will tell you this... You may not *think* of yourself as anorexic... but if you actively added a bagel with cream cheese, a half can of beans and a fruit pie to your day, which is probably around 500 calories maybe? if you're using full items... And you previously did not eat breakfast or any snacks... and the total calorie count of those items added to what you would normally eat was only 1900... you definitely are not normally eating 2k a day. That's the average intake for any adult, but most average males come in over 2k, while most average women come in under. The 2k is a sweet spot for nutritional values. If your numbers are correct, that means you routinely eat 1400 calories or less, and for a non-overweight male (or any male for that matter) this would be considered undereating.

Anorexia does not require severe and obvious mental disorders. There are actually two kinds of anorexia, generally... Anorexia as a term in itself simply means "without appetite" and can be a medical condition on its own without psychological complications (though I suspect there may be some components of psychological need here, based on how you wrote about this). Anorexia nervosa is what is commonly known as anorexia in casual conversation, and has the components of fear and anxiety. However, anything from lifestyle choice, medications, stress and other circumstances can cause medical anorexia, which in turn makes a person not hungry and not want to eat because they are waiting for hunger cues that don't come.

Anorexics suffering from anorexia nervosa typically average a daily caloric intake of around 900 calories a day. Some less, some more... But the common misconception is that anorexia of this type means you never eat. While severe cases and end-stage anorexia nervosa often manifests with a complete refusal to eat, most people living with AN are doing so by eating very little and feeling emotionally upset about what they do eat.

We can naturally cause medical anorexia simply by not eating enough for a long period of time, to the point where we train our bodies not to feel hunger anymore. This is how I live my life now, truth be told. Even though I eat a more normalized diet with appropriate caloric intake for my plan, I experience hunger very rarely; a condition trained and caused by my refusal to eat when hungry for many years. It is possible to train immunity to hunger hormones, is what I'm saying. My above suggestion of almonds on the hour honestly changes that around for a while, and I became voraciously hungry because I'd finally told my body I'd give it consistent food.

Anyway, this is long, but I wanted to ultimately say that there is nothing shameful about acknowledging either medical anorexia or anorexia nervosa and getting assistance and treatment for those conditions. Upping calories takes time. Since you don't know your baseline, I suggest logging what you consider a typical day so that you CAN know a general baseline, and then add 100-200 calories every 1-3 days as tolerated until you reach your daily intake goal. This is how we rehab undereaters and disordered eating patients that have been in their low eating patterns for an extended period of time. It will make it easier to tolerate and less daunting if you give yourself time to adjust.

I am sorry things have been rough for you. I do hope that you take the doctors advice seriously.

2700 calories is not that much for your age and height.

You should not be overly concerned with "healthy" eating. The weight you are at is unhealthy. It is great to eat fruits and veggies and lean meat but you need the calories. Adding in some foods that are high in fat are a delicious way to get more calories in. Peanut butter and ice cream are not that expensive. Milkshakes and cheesecake have a lot of calories. Anything with cream cheese frosting...(OMG I want cinnamon rolls with cream cheese frosting right now!).