I am successfully losing weight on 1400 calories a day. It isn't going to produce miracle results like half a stone a week (as promised by some diets) but my weight loss is averaging out at just over a pound a week and I'm really happy with that. The 1400 cals a day is also laying a good foundation for permanent changes to my eating that I can live with quite happily! I'd lose more weight on 1400 cals if I could exercise more vigorously but arthritic hips and knees make that impossible.
Yes - it is suggesting that you would lose weight, over the long term, if you had 1831 Kcals a day. Consuming close to the 1410 Kcals should enable a 1-2 lb/week loss.
I don't use My Fitness Pal but it may be that the 1200 Kcals is if you were lying in bed, doing nothing all day. I'll be corrected if this is wrong, but if you take any exercise (including housework, walking round the shops, etc) you would build up a calorie bank to draw on to increase your consumption. (Hope that makes sense!)
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