Best Alternative!

I feel sad for the sister in-law going back and forth to the hospital, after she gained weight she started to have all kinds of health problems. She took a week off from work just to get back with her healthy life but it seems so hard for her because of her weight problem. She does all kinds of diets and exercise but it wasn’t enough to get rid of her unwanted body fats. I talked to her on the phone last night and she was considering using some diet pills now for quick trim fast cleanse. Her doctor advised her to lose weight sooner before her health problems become worst. Sometimes I wonder why gaining weight is easy and losing them is so hard? Can anyone tell me why?