Question about calories

You will lose wright fast eating 800 - 1000 calories a day but that sort of lifestyle isnt sustainable, trust me, been there done that! Its not a healthy way to lose weight, even if you are not feeling hungry for more caloreis you really should try. Do you eat back exercise calories? You should be eating the minimum of 1200 calories a day for your body to function properly. You will lose weight eating 1200+ calories. If the site is giving you 1430 calories then you should honestly eat close to that.

You should be eating more. It all depends on how active you are, but even if your not very active you should be eating AT LEAST 1200.

You'll screw yourself up long term if you eat that little. Number one, it is extremely unhealthy. Number 2, you aren't eating enough to support your body's organ functions let alone energy to do anything else. Try to eat AT 1430, not below. Read this thread on why eating so little is not good for you:

http://www.myfitnesspal.com/topics/show/3047-700-calories-a-day-and-not-losing

Look, of course you will lose weight fast and right away eating so few calories, but the problem is, it will only last a few weeks. Your body can't sustain that kind of low calorie amount and will go more quickly into starvation mode- conserving the energy you do eat, and holding onto it, so that you will stop losing first as rapidly as now, and then you will plateau. For a long term weight loss, you should really increase your calories now, it will pay off later. Also, I was strict with the calorie amount on here and at some point became a bit less disciplined and started going 1-200 calories above my limit every day (I also started running, which may have made me much hungrier despite the added exercise calories). Anyway, I changed my weight loss goal from 2 pounds a week to 1 pound a week, my calorie limit went up, and I started losing more weight than on the lower calorie limit.

YOU HAVE TO EAT MORE!!!!! Trust me, I have been there and back and you will eventually stop losing and hit a plateau (not to mention this is dangerous because you may end up extremely malnourished). This is because your metabolism will basically shut off and will stop burning fat. The human body is constantly trying to reach a level of homeostasis. It doesn't want to lose weight. It is programmed to hold onto those "reserves" just in case food becomes scarce. Your body needs at least 1200 calories a day in order to perform it's natural functions (breathing, digestion, etc). Also keep in mind that your caloric intake should depend on the weight you are starting out at. If you eat any less, you are telling your body that food is not available and that it should hold onto what it has. I know that it is hard (REALLY HARD) to re-train your mind into believing that you need MORE calories in order to lose weight, but it's true. Not to mention I've always been a firm believer in "the faster you lose, the faster it can come back". Make sure you set up your goals on myfitnesspal and it will tell you how many calories you need to be taking in every day. AND don't forget to eat back the calories that you burn working out (this is very important, as well).
Check our this article- it has really helped me a lot in trying to reach an appropriate level of eating right, cardio, and weight training. That is the RIGHT and HEALTHY way to lose weight. Good luck! Don't give up!

http://fitnesswithnatalie.blogspot.com/2011/05/most-dreaded-word-in-weight-loss.html