Sometimes Yes, sometimes No. Depends how your exercise regime is, and how many calories you cut from your regular diet while you were on the calorie diet.
For a calorie - based diet plan, you need a menu planner with a calorie counter. Most quality websites that feature calorie counters and menu planners are fee-based (such as http://www.ediets.com), but there are a few good ones that are free (such as www.caloriecontrol.org/ ). you can also enter your target weight, and the web site calculates how many calories you should eat every day to reach that weight. Since you mentioned you'd like to lose weight fast, a word of advice: the sustainable weight loss rate for most people is about 2lb/week. If you try to lose weight faster than that, you may either gain the weight back once you end your diet, or, worse, you may suffer adverse health effects by cutting down too much on your calorie intake.
Probably not, especially if you maintain an other-wise healthy lifestyle and exercise regularly.
Weight gain could be hindered by lacking something in one's diet and lifestyle. Once this is fixed, in most cases the weight gain is successful. If this still persists, then it is likely to be due to an endocrine or hormonal issue.
Taking on a calorie counting diet is best done when you consult a physician and calculate your bmr. Once you've conducted your bmr you can calculate the amount of calories you should best consume so your body does not go into starvation mode hindering your weight loss goals.
A vegetable soup diet is not a good source of weight loss. This type of diet may work for a few weeks, but you will soon become bored with this diet and once you start eating regular foods again you will gain weight back.
You need an actual change in life style. If you go on some fad diet that you can only stick to for a little while and make no other changes, once you stop the diet you will gain the weight back.
A HCG diet is slightly different in that you have injections or supplements of the hormone HCG. However it should be noted that the actual weight loss results mainly from the restricted calorie intake causes the actual weight loss and when a person stops the diet then typically the weight they have lost is gained once more.
That totally depends on your personal medical history. It would be unhealthy to only eat 900 calories a day. The human body needs somewhere between 1200 to 2000 calories a day to function. Personally, I was on a 1200 calorie a day diet, and I was still gaining weight. I had to go to the doctor and have tests done. It turned out I had a medical condition. Once they diagnosed the condition and put me on proper medication, I was able to start losing weight. If there is something off with your body, you may gain weight on almost any diet. You have to go to the doctor and find out what is going on.
Likely because you either really DO need 1200 calories to maintain your weight (how did you arrive at the concusion that you need 1500 calories?), or else because you have been dieting for so long your metabolism is slowed, hence when you consume more food you will gain some weight. If that's the case, you likely need to accept some initial weight gain, bring your calories back up to 1500 each day, and then once the metabolism is regulated again, you'll have an easier time maintaining or losing weight.
I once read about that, and it works for me!
If one wants to maintain a fit body without any added fat one should consider a low calorie diet plan. Inside the weight training world a diet ought to be balanced and you should take special care not to exceed ones every day allowance of calories. When one goes over his caloric limitations over and over again he begins to pile needless fats in his/her body. Fats once gained become particularly difficult to remove. It's much easier and more beneficial to go on a low calorie diet and keep the fat of in the first place then gain the fat and try and lose it.
Once we stop using of any diet supplements it may cause to gain weight. Depend up on individual body functionality the result will occur. For weight loss instead of supplements, it is always recommended to go for diet and working outs.