Big Dave D
New Member
While the question wasn't directed to me - after a gastric bypass the restriction lasts around eighteen months. Weight loss is intense for the first three months and then it slows down. By eighteen months it usually levels out. As far as becoming underweight - it has happened, it's rare but excessive weight loss is a potential side effect but it isn't typical. More typically someone will level out at around a BMI of 30 and getting to a BMI of 25 will rely on lifestyle changes such as being physically active and maintaining a healthy diet. It has been known for WLS to fail when someone shows a disregard to the rules and guidelines. However when you don't feel hungry, feel your health improving and see clothes 'fall off' and the scales drop it's not so difficult to motivate yourself to stay pure to the guidelines.
Well, whilst I'm answering my own question.....
The restriction doesn't always last 18 months. For example, I don't have any restriction. There's a lot more to RNY-bypass than just physical restriction.
My BMI is already 24.9, with a weight of 79.0kg. The hospital expected me to level-out at 100kg, I'm currently 21kg beyond that.
I imagine I may dip as low as 70kg then hopefully stabilise around the 75-80kg mark. I've worked bloody hard at achieving my goal, so I'm not about to throw caution to the wind and mess-up now. Not after coming this far. I don't do stupid things, eat the wrong things and generally fu*k up. That takes a LOT of willpower and determination. I'm very determined.
My weight loss is the subject of a study by academics at Imperial College London and put down to anatomy, physiology and endocrinology changes, effected by the process. The limb length has little to do with it, the pouch size is also irrelevant. My surgeon described that as "old-school RNY theory".
The majority of weight loss is caused by hormonal changes in the intestines and the associated 'messages' of hunger that are sent to the brain, driving us to eat more food.
Marcus - you're only 2 months or so into the process. From my experience, nearly 11 months down the line, my weight loss was rapid for the first 7 months or so. It then slowed, but has consistently been headed downward as a trend.
So long as we consider the surgery a tool and maintain the hard work in our heads, weight loss can be both consistent and manageable.