Is there any benefit from being overweight ? or it is only problems ?

For solace, yes: You are 17 and can have the chance to become normal in weight. But people within 10% above their ideal body weight are considered healthy by medical professionals and well-studied in terms of survival during disease to do better, they have enough nutrition to lose firs whereas above that is unhealthy due to wound-healing problem and risks of dm, heart problem, hypertension, etc..

Some : It allows for the skin to not age as quickly. Overweight, bmi 25-29, in a recent study was found to be healthier than ideal bmi 18.5 -25. Jama releases for january 01, 2013 higher levels of obesity associated with increased risk of death; being overweight associated with lower risk of death.