Where can I buy the weight loss system Nutrisystem for men? Can I buy it online?

What is the greatest weight loss a man or woman have ever had on the Nutrisystem Diet Program? ?

I am severely obese and my dream is to lose 200 or more pounds on the Nutrisystem Diet. I just started two days ago and I know it will take a long time, perhaps two years or longer. Is it possible to lose that much on this diet? What is the most weight you heard of that a person loss on the Nutrisystem diet? Thank You.