The amount that you should lose depends on several factors, such as your gender and frame size.
This will depend on your height but if you are reasonably small in height and weigh this much at 9 then yes, weight-loss would be acceptable.
It depends on the age. How old are you?
Do not lose any weight , you are already UNDERWEIGHT for your height, this is NOT healthy.
199 - 135 = 64 lbs is the weight you should lose !!
To my conditions and your 15 yrs old you should lose 40 lbs
It is best to maintain your weight at a healthy level [not to low or high] ask your doctor what a good weight for you is. Sometimes if you have a low weight for your age and height you need to gain weight, but if you weigh to much you should lose weight. So your best be is to ask your doctor about your weight and see what you need to do!!
Depends on lots of factors - current weight, amount of exercise you do, height..
In my opinion, you have no neeed to lose your weight. You should have to focus to maintain your health and fitness which is most important part of our life.
It depends how tall you are. Using a BMI calculator (available online) enter your height and a target weight. Adjust until you reach the desired BMI. Subtract your target weight from your current weight for the amount of weight you need to lose altogether.
You are already UNDERWEIGHT, for your height, so do not lose any more weight because you will look anorexic.
It depends on your height and weight. Find an online BMI calculator and then you can type in your weight and height then it can tell you whether you are average weight or not.
It depends on your height, but a loss of 70-90 pounds should do it. See the NHLBI chart (link below) for more information.