View Full Version : Excess fiber leading to decrease calorie absorption?

09-23-2014, 05:56 PM
I'm wondering if it's possible for excessive fiber intake to affect the body's ability to fully break down and utilize all calories consumed. I'm aware that fiber has the ability to bind to certain micronutrients in the intestines and inhibit their uptake, but have no idea if it plays any role on the body's total calories consumed.

I ask because I'm currently consuming 3200 cals/day and maintaining/slightly losing weight. The issue is I'm 5'8" 157lbs. As you can tell, that's a very high maintenance level of calories for someone my size. This made me think that maybe it was possible that calories were passing through my body undigested due to my fiber intake.

My fiber intake is 55g per day.

09-23-2014, 07:09 PM
55 grams is fine , its not extremely high

09-23-2014, 08:25 PM
Fiber is an indigestible form of carbohydrate that doesn't get broken down and doesn't interfere with food or calorie absorption.

09-24-2014, 12:25 AM
Dietary fiber does not significantly affect calorie absorption. It may slow it down, which is actually favorable because it results in lower blood glucose spikes after meals, but it does not decrease it. It also does not significantly affect mineral absorption.

09-24-2014, 12:36 AM
Dietary fiber does not affect calorie absorption.


09-24-2014, 01:13 PM
Thanks all!