They will die. This is not enough food to live. She needs to go to the hospital.
What will happen to someone (29F) drinking only one 330 Calorie nutrition shake a day?A friend has been having a mysterious, very serious neck/jaw issue for the last two years, rendering her unable to eat solid food. She has been to many doctors, who were all unable to diagnose or treat the issue.She often lives on Kate Farms nutrition shakes, which have 330 Calories each. She would usually drink 4-5 a day, plus whatever else she felt able to swallow. Recently however, in particular after restarting taking her antidepressant medication, the feeling of choking on anything she tries to drink has worsened  she describes it being possible to drink a shake in the morning after waking up, but getting more and more difficult throughout the day.She reports that she has only had an average of one a day for the last 3 or 4 days. There's no sign that it's getting better, and she is feeling resistant to trying to drink more of them because it is so physically unpleasant/scary to do so. I'd like to present her with some solid information about the progression of malnutrition  what kind of symptom timeline can she expect if she stays at this extremely low Calorie intake?She is already obviously very low-energy and depressed. I'm looking for concrete info on how many days of 1 shake/day average it will take before other serious physical symptoms of malnutrition emerge.Thanks!Age: 29Sex: FemaleHeight: 5'4"Weight: ~130, reports losing 50lbs from normal weight a year agoRace: ChineseLocation: Eastern US