[_moof]

> I've tried fasting and I was able to do 18h fasts daily with no problem and even go over a week without eating, just on water and herbal tea. But that completely messed up my habits, metabolism and relationship with food, and I'm now struggling to follow a schedule and any kind of diet.

This is called restricting, and it's classic eating disorder behavior.

> I'd love to know if anyone has been able to completely replace food with protein powders and vitamins, hospital liquid diet, or any other alternative. The idea here is to abstain from food for a full year and then restart eating normally with a light balanced diet with a nutritionist's help.

This is incredibly dangerous. Don't do this.

Get a nutritionist, and seek professional help to recover from your food addiction/eating disorder. Most importantly, do what they say.

The internet is rife with people who have active eating disorders and will make yours worse in an effort to justify their own unhealthy behavior. It's almost never a good idea to take the internet's advice on psychiatric matters, but in this area it is especially dangerous.

Get off the internet and get professional help.

[webmobdev]

OP is right. A recent trend in the last 2 decades is people obsessing about nutritious and healthy food (See - https://www.webmd.com/mental-health/eating-disorders/what-is... ). (Probably because of the fear-mongering type marketing by the "health food" industry) Note: I don't claim you have Orthorexia and just mentioned it as an example to point out how something we consider as a good habit (being mindful of what we eat) can also become unhealthy and stressful for us when we do it in excess. ("Everything in moderation, including moderation" is a good principle to keep in mind).

[alphabettsy]

> This is called restricting, and it's classic eating disorder behavior.

Most people would recognize this as intermittent fasting by itself, but with the rest of it this sounds problematic. I’m not sure you can just replace one addiction with another without looking to the root of the issue.