 [ Symptoms ] what is the minimum number of calories a woman can safely eat long term up to two years or more  i have seen numbers ranging from 800 to 1200 even here on webmd where 800 might be the break between low calorie and very low calorie and 1050 is where your body enters starvation mode  1200 is the conventional number but is this in keeping with modern understanding if a person opted for 800 without supervision would this be safe and sustainable long term provided it was followed with proper transition and maintenance [ Disease ] i feel that you should be medically diagnosed first a chiropractic assessment is not sufficient before any home treatment of back pain that has lasted a month it would be wise for you to see a back specialist md and have some diagnostic tests first there are plenty of exercises and stretching regimes but getting a definitive diagnosis is the most important thing first