Join Date: Mar 2003
Bikes: Quattro Assi & Trek 7000
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Originally Posted by PWRDbyTRD
please don't take this in a nasty manner....since I've started riding my bike I have to go to the bathroom more frequently and when I do "it" floats....I know this is an odd question, but can someone explain why? by it I'm referring to solid waste.
The comments about a diet change are right on. Have you altered your diet's Fiber content recently? Depending on the type of Fiber you consume, you can vary your stool weight, and that may impact the density of the stool. Density=Mass/Volume, so if the weight, or mass, of your stool decreased and the total stool volume stayed the same, then your density would decrease. If the density of the stool wasn't enough to displace an equal amount of water, then it would subsequently float.
Fiber may be fermented by bacteria residing in your colon. When the bacteria ferment the fiber, they produce CO2, Hydrogen, Short Chain Fatty Acids, and Methane (gas). Fruits and vegetables contain hemicellulose and pectins that are more fermentable. Resistant starch, starch that is indigestible even after prolonged contact with enzymes, is very fermentable - cereal has .4-2% resistant starch, potatos have 1-3.5%, and legumes have 3.5-5.7% resistant starch. Also, a large intake of grains, seeds, and bananas can cause your body to ferment more of this resistant starch.
The specific gravity of your stool matters as well. SG is a comparison of the density of a material with that of water. So, if the SG of your stool is less than that of water, it should float. Have you had more gas lately? Usually this floating stool will accompany a dietary change, diarrhea possibly due to malabsorption, and an increase in gas. Also, it could be an acute gastrointestinal infection that causes the problem.
Hope this helps!