About gastric bypass surgery.?

My sister had gastric bypass about 3 years ago, she lost about 150 lbs, and really had no bad side effects from it. Now I saw her sunday after not seeing her in about a year, and she has gained a substantial amount of the weight back, I am guessing about 75lbs. Of course I didn't come right out and ask how much. My question is a-how is that possible, maybe I don't understand the concept behind the surgery, but I don't see how it is possible to gain that much back. and B-could it lead to more health complications for her.
Thank you in advance for all the info

it's possible because operations like gastric bypass don't solve the underlying problems for people that don't exercise and/or consume far too much of the wrong types of foods. you don't get fat eating chicken breasts, fish and veggies.

She regained because she did not learn to eat in a healthy way. She still overeats and she probably does not exercise. Most people do regain some weight (10%) but not 50% of what they lost.

I am writng a book about GB: the successful ones and the unsuccessful ones!

Overall people should not be getting the surgery.

You need to get on her about this because this is very possible for a Gbypass patient. Just tell her she is gaining and I am sure she'll freak out and maybe be a little more dillegent with the post-op diet. a: yes you can restreach out the pouch and it does happen with some determined to be heavy patients. b: yes the stomach could tear or even worse she could end up being obese again which is the #2 risk of all diseases behind smoking... make sure to start planning a family intervention on this to save her life. Good luck.

Yes, people can gain weight back.
Gastric bypass surgery isn't a magical thing that "POOF" makes ya' skinny. You MUST change the way you think about food, eat, work out & what you purchase.
I had gastric bypass 7 weeks ago so far I've lost 42 pounds and 19 inches, I feel great but the most important thing--I do not pickup food and eat to just eat. I know what I have to do to keep losing and be healthy.

I would suggest your sister go back to see her surgeon and check into having her pouch/stomach reshrunk. (Yes, it can be done she needs to speak to her doctor about it)

All the best!!