Very low calorie days due to health condition, how do I not gain weight when going back to normal deficit? I have a really bad bout of gastritis (intense stomach pain) and have been eating nothing but rice cakes, peanut butter, bone broth, banana and watermelon. These are low acid and don't make my stomach hurt right now. Have been doing this for about a week and a half now. My days worth of calories is probably like 400-500 at most. Which I know is not healthy, but thats all I can manage. Of course I am losing a little bit of weight but when I can eat somewhat normally and with more calories, how do I continue to lose weight? I am a 5'6 28f who is 185lbs but I want to get down to 135lbs. Do I just stay in a deficit and will keep losing weight or will my metabolism be affected?