Can I keep and gain muscle on a low calorie diet?

Probably not. It wold depend on the amount of protein you consume and how much you work out to develop and keep the muscles. Low calorie diets may not supply the anount of carbs, protein and fat you will need to maintain. It would depend on your height and weight and age. I would be very careful, work with a reputable sports trainer, sports medicine doctor and reputable nutritionist. Danger! will robinson!
Depends. Depends upon how low and if you are consuming enough lean protein. A very low calorie diet is <800 calories a day, and needs to be more closely monitored by a medical person.So, calorie type and activity level should conserve muscle mass, if done right.

Related Questions

Is it possible to counteract lean muscle loss during a low calorie diet through exercise?

Yes. Exercise especially resistance training with weights can prevent muscle loss while loosing weight/fat , while still taking a calorie restricted diet. Please ensure appropriate protein intake to maintain or even build muscles. Read more...

Is there any reason why I gain weight very easily now even on a low calorie diet as about 3 to 4 years ago I would eat more & not gain weight at all??

Need metabolic testi. You are a little young to have normal aging explain this. You should have thyroid, cortisol. And other endocrine testing done. Read more...
Don't starve urself . If u don't eat too often and wait too many hours to eat the body will store what it can into lipids=fat cells because it feels it should hibernate. If u eat every 2-3 hours the body feels it needs to burn off the food. Other aspects to consider are u'r thyroid, sex hormones like estrogen or Progesterone or even testosterone-but they would also come with unusual hair in areas u may not have had. Read more...

Might going on a low calorie diet for 30 days cause rapid weight re-gain after eating again?

Yes. With crash dieting, it is very difficult to keep weight down. You have to be physically and emotionally ready to loose weight and keep it down. So loose weight slowly. Read more...

Is there a way to prevent weight gain after a very low calorie diet?

Yes. Weight gain can be prevented or overcome by a permanent change in lifestyle and in personal outlook. If a person eats fewer calories than he needs to live on each day, his body will use the stored fuel (fat). If a person exercises more than he did before, but does not start eating more calories, then his body will use up the fat (stored fuel). Easier said than done, but definitely possible to do. Read more...
Yes 80/20 diet. Where 80% of your diet consists of low carb, high lean protein and plant or fish based fat and no alcohol and 20% is rather unhealthy, meaning higher carb diet. If one can follow that (and I have many patients who are on it for maintenance) for most part, they can maintain their weight. So about 2 meals and 1 snack healthy and 1 meal is considered the "guilty pleasure". Read more...