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06-30-2009, 05:55 PM
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#1 (permalink)
| | Cub Reporter
Join Date: May 2009 Location: Minneapolis, Minnesota
Posts: 80
Weight Statistics 1/26/2009 Start Date:
Had RNY surgery on 2/19/09 Surgery Date:
5' 6"
Height:
335 lb Start Weight:
227 lb Current Weight:
150 lb Goal Weight:
108 lb Weight Loss:
77 lb Lb Left to Lose:
32.2388059701 % % Lost:
5/2010 Goal Date:
Body Mass Index54.0645087236 BMI Start:
36.6347566575 BMI Current:
24.2079889807 BMI Goal:
Weight Loss MethodRoux en Y Gastric Bypass
 |  Absorbing nutrients
Here's a question...is it true that during the first year of WLS, that you don't absorb nutrients very well? If that's the case, then why do we absorb calories? Or do we absorb less calories the first year? 
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06-30-2009, 07:49 PM
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#2 (permalink)
| | Seasoned Veteran
Join Date: Jun 2007 Location: Tampa, FL
Posts: 3,605
Weight Statistics July 10, 2007 Surgery Date:
5' 6"
Height:
271 lb Start Weight:
175 lb Current Weight:
182 lb Goal Weight:
96 lb Weight Loss:
-7 lb Lb Left to Lose:
35.4243542435 % % Lost:
Body Mass Index43.7357667585 BMI Start:
28.2426538108 BMI Current:
29.3723599633 BMI Goal:
Weight Loss MethodRoux en Y Gastric Bypass
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If only we could train our bodies to only absorb what we wanted it to!!! I'm sure Doc will give you the low down on this one ~ I think it's that we absorb less of everything. Also, it depends on your procedure since where your stomach is connected to the intestines determines what gets absorbed and how much.
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06-30-2009, 09:23 PM
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#3 (permalink)
| | Seasoned Veteran
Join Date: May 2008 Location: Just north of Iowa, not far from I-35. 2nd star on the right and straight on 'til morning!
Posts: 8,641
Weight Statistics December 13, 2007 (pre-op liquid diet started) Start Date:
December 27, 2007 Surgery Date:
5' 9"
Height:
280 lb Start Weight:
172 lb Current Weight:
184 lb Goal Weight:
108 lb Weight Loss:
-12 lb Lb Left to Lose:
38.5714285714 % % Lost:
Originally - 12/08. Actually - 8/08. Goal Date:
Body Mass Index41.3442554085 BMI Start:
25.3971854652 BMI Current:
27.1690821256 BMI Goal:
Weight Loss MethodRoux en Y Gastric Bypass
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At first, malabsorption is part of the weight loss mechanism. Later, the body learns to adjust and it compensates for the inefficiencies we introduced through surgery. That's why you lose more early and less later.
If you didn't absorb calories at all, you'd die in a week or two. Can't run the body on empty for too long, y'know! But you don't absorb as efficiently during the peak malabsorption period.
This is also why we need to be soooo careful about our vitamins and supplementation!! Any questions on that, just talk to MsVickie and she'll set your feet on the path of wisdom!! 
CT
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07-01-2009, 02:23 AM
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#4 (permalink)
| | Super Moderator
Join Date: Nov 2005 Location: Tokyo, Japan
Posts: 24,788
5' 5"
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With the gastric bypass, it's a two-fold effect.
The small pouch limits the amount you can eat at one time, so first reduces the number of calories that goes through your mouth.
The bypass reduces the length of the gut the food will travel through, which means the area where food is absorbed is reduced.
However, the gut adjusts the amount of nourishment absorbed per square inch, so, right out of surgery, when the rate of absorption is the same as pre op, you will obviously will absorb much less post op. However, as the body adjusts to the change in the digestive system, the rate of absorption per square inch will increase to compensate for the *lost* length so in the end, the total amount absorbed may get pretty close to what it was pre op. This is one of the reasons why your weight loss slows down after a time, and a regain takes more time to lose than immediately post op. The pouch will also become able to accomodate a bit more food over time, compared with immediately post op, so your total intake will also increase over time, until it reaches full capacity about a year to a year and half post op.
There is an exception to this, which applies to certain vitamins and minute minerals. Many of these are area specific, in other words, they can be absorbed only in certain areas, like the protion of the stomach that is separated from the pouch, or the duodenum, or the section of the gut that is bypassed. In this case, the rate of absorption may stay low, so you need to supplement and increase the amount you get in, to compensate for the low absorption rate, or even go a different route such as injections and nasal sprays, to get in what you need.
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07-01-2009, 02:35 AM
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#5 (permalink)
| | WLS Guru
Join Date: Dec 2008 Location: close to Toronto
Posts: 497
Weight Statistics November 21, 2008 Start Date:
November 21st, 2008 Surgery Date:
5' 6"
Height:
265 lb Start Weight:
149 lb Current Weight:
150 lb Goal Weight:
116 lb Weight Loss:
-1 lb Lb Left to Lose:
43.7735849057 % % Lost:
no hurry Goal Date:
Body Mass Index42.7674471993 BMI Start:
24.0466023875 BMI Current:
24.2079889807 BMI Goal:
Weight Loss MethodRoux en Y Gastric Bypass
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they bypass the first part of the small intestine. This is where the MAJOR part of absorption takes place. This is also where digestive enzymes are added to break foods down into recognizable pieces. Here also are the carriers or flags for specific vitamins and minerals. Calcium for example attaches to a flag that says HERE I AM!! Our bodies respond not the calcium , but to the flag waving on top of it...thus we need to get extra calcium so that enough can be absorbed. We need to take extra calcium and B12 for the rest of our lives.
The cells in our bodies are amazing reprogramable things . They eventually reprogram to make the most of we do eat. However we will malabsorb things for the rest of our lives. Interestingly enough...did anyone catch oprah today? It was a rerun of a doctor OZ and it was on controlled calorie lifestyle...its regular people that have extended their life expectancys up to 125 years old..by controlling the caloric intake and making EVERY lil morsel of calorie the best possible quality choice, packed with quality goodness. For breakfast this guy ate...3 apples but JUST the skins of three apples, the skin holds the most fiber, vitamins and goodness. Then he added a cup of blueberries, half a cup of raspberries and carefully measured out walnuts. Blueberries, cherries and raspberries are PACKED with goodness.
Hey doc your answer wasnt there when i started typing...
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07-01-2009, 02:38 AM
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#6 (permalink)
| | Super Moderator
Join Date: Nov 2005 Location: Tokyo, Japan
Posts: 24,788
5' 5"
Height:
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Quote:
Originally Posted by stylindi  Hey doc your answer wasnt there when i started typing... | 
You and I were typing at the same time | |
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07-01-2009, 11:43 AM
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#7 (permalink)
| | Cub Reporter
Join Date: May 2009 Location: Minneapolis, Minnesota
Posts: 80
Weight Statistics 1/26/2009 Start Date:
Had RNY surgery on 2/19/09 Surgery Date:
5' 6"
Height:
335 lb Start Weight:
227 lb Current Weight:
150 lb Goal Weight:
108 lb Weight Loss:
77 lb Lb Left to Lose:
32.2388059701 % % Lost:
5/2010 Goal Date:
Body Mass Index54.0645087236 BMI Start:
36.6347566575 BMI Current:
24.2079889807 BMI Goal:
Weight Loss MethodRoux en Y Gastric Bypass
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Thanks for the explanation everyone. I am more knowledgable today. ;=)
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