There is a woman in my meeting that has lost 138 pounds. Her goal is to lose 150. It has taken her almost 3 years to get to this point but she has really stuck to it.
A fellow Ww member in my area has lost 100 lbs. She did it in 10 months! She has about 50 to go and seems to be losing her motivation but we are all trying to keep her going.
the most I've ever witnessed is my mom and my aunt... my mom lost 85 pounds in order to have a hernia surgery and my aunt lost 180 pounds just to get healthy. I have heard of someone losing 220 pounds !