How can I gain weight fast?

Don't. Just like losing weight fast isn't good, gaining weight fast is not either. Look at your weight and your diet. People have different metabolism and some can eat everything and gain nothing. Others are the opposite. If you are taking in quite a bit of calories and not gaining weight you may want to see your family physician and make sure you are not hypothyroid or another medical issue.
Diet and muscle mass. To gain weight you have to consume more calories than you are burning. Do this in a healthy way though. Don't choose junk or fast food. Keep a well balanced diet and make sure you are getting all the nutrients you need. Don't cut out exercise as it is very good for you. Weight lifting and other muscle building exercises can help you increase your body mass.

Related Questions

How can I gain weight fast.?

Cruise. Go on a 2 week cruise. Essentially relax and do very little and eat easily accessible high fat foods frequently. Read more...
More calories. I can't think of a good reason why anyone should do this unless you were a prize fighter and had to move up a weight class.Regardless,if you eat a lot of calories and don't burn them off,you will gain weight. Read more...
Lift and eat right. what are you trying to gain weight for? I assume you want to gain muscle, not fat? There is a lot out there on this topic; way too much to write here but: eat more lean protein and complex carbs (aim for 0.5-1g protein per lb of body weight) and do weight training 3-4 days per week; focus on the big muscle groups (squat, dead, bench, pull ups, dips) Read more...

How can I gain weight fast with type 2 diabete?

Gain weight?? Most patients with type 2 diabetes are at least overweight and want to lose weight because obesity exacerbates Insulin resistance and pancreatic failure. Patients wtih type 2 diabetes who gain weight excessively may find themselves on Insulin sooner and precipitate complications of diabetes more rapidly. Read more...

I am 1.75meter, 50kg. I am very skinny. How can I gain weight fast?

See below. You do not want to change your weight "fast", it is safer to do so gradually. But if you want to increase your weight you need to consume more calories than you burn. Don't choose junk food, make sure you're getting all your necessary nutrients. Weight lifting and similar exercises can help you increase your muscle mass. Read more...

How can I gain weight fast and healthy?

Eating more calories. in general will cause weight gain. Eat a balanced, healthy diet. As far as gaining weight quickly it is typically not healthy. Work with a nutritionist or dietitian for additional help. Read more...

How can I gain weight fast? Without losing it or without taking ant pills

I would not advise. Fast change in your body weight . It will upset lots of things in your body. It is always advisable to make it gradual so that your body adjust to the change properly . The best way to go is eating balanced diet and avoid alcohol , cigarette or any harmful habits . I would not advise any hormone or medication for the purpose of weight gain because you are running risk of unknown consequences . Read more...
Wanting bad Health. I do not know who is giving you medical advise there at home. But, your question suggests a very unhealthy and unnecessary desire. First there are no pills to gain weight. There are pills advertised to lose weight, but these are very dangerous and are not advised by any ethical doctor i know. Fast weight gain is very hard on your heart, liver and kidneys. Read more...