Depends on lots of factors - current weight, amount of exercise you do, height..
You will eventually lose weight on a 1000 calorie diet. On such a low calorie intake, the body starts eating away at muscle for nutrients. This is not good. Consult a registered dietician.
Diet calorie plans for only 1000 calories are sometimes safe, but it seems like it isn't very healthy, and like it just makes you lose weight from lack of enough food, so I don't know if it's safe.
The 1000 calorie diet has two sides to it and that's yes, it does work and no it's dangerous. While it does help you lose weight, eating so little can comprimise your health. An option would be to have a short time span for the diet while you use it.
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Usually to lose weight women stick to a 1500 to 1700 calorie plan. Guys can do a 2000 calorie plan ok. however anything that is a reduction of your normal total calorie intake is a good diet.
If you want to lose weight very quickly, try a calorie restrictive diet with a low intake of carbs. This is hard to do as you will feel hungry, but you will lose the weight.
It depends on the persons Basal Metabolic Rate.
Embarking on a low calorie diet is an excellent way to shed pounds and lose weight. To lose weight, your low calorie diet must provide you with the adequate amount of calories for health while still allowing you to create a caloric deficit. The most effective way to lose weight is to combine a low calorie diet with moderate exercise. Exercising for 30-45 minutes three times a week will help you to shed the pounds and enjoy a leaner, slimmer body. If you are looking for a low calorie diet that will help fight fat, ask your doctor for a recommendation.
There are no good 1,000 calorie diets. At a thousand calories you will end up malnourished and permanently hungry. Calorie controlled diets are a billion dollar industry, and they keep to themselves that calorie counting in and of itself does not help anyone lose weight. It is the type of calorie that matters, if a negative calories (which is good) then you are likely to lose weight, and you can eat more so not feel permanently hungry.
There are many low calorie diet plans you can try to lose excess weight. The Low Calorie Diet plan and The Model Diet Plan are just two that you to try.
On the 1800 calorie diet you typically lose about a pound a week. If you are looking to lose more weight than that in a week you should involve exercise to your diet plan to see better results.
The number of calories you should take in on a diet will depend on your weight and activity level. A low calorie diet (within reason) is the easiest way to lose weight, since weight loss depends on burning more calories than you take in.