When you’re constipated, you have hard or lumpy stools that are difficult to pass.
Constipation can occur when there's a delay in digested food passing through your body and being expelled. It can also happen when your poo is too hard, often because it doesn't contain enough water.
Better out than in.
Holding on too long triggers a build up of intestinal gas that may eventually escape via an uncontrollable fart.
Defecation duration is surprisingly similar throughout the mammal world.
Elephant image via www.shutterstock.com.
New parenthood got our fluid dynamics experts thinking about what ends up in the diaper. They headed to the zoo and the lab to come up with a cohesive physics story for how defecation works.
The process of passing a bowel motion is more complicated that you might think.
Pauline Hanson’s concern about the ATO installing squat toilets to cater for its increasingly diverse workforce has prompted debate about the best way to go to the toilet: sitting or squatting.
Will this make my tummy hurt?
Pandas are bears – but two million years ago they stopped eating meat. Their digestive systems have not yet adapted, though. Do upset stomachs make panda pregnancy more difficult?
For years, we’ve known that brain activity can affect our gut.
Could it be that in some cases, changes in the gut are actually driving mood disorders rather than the other way around? Mounting evidence suggests this is likely to be the case.
Threadworm infection is common but it’s often asymptomatic.
Intestinal worms (or helminths) are multicellular parasites that live inside the gut. When mature, they can generally be seen with the naked eye. In developing countries with poor sanitation, the most…
Allergic reactions to food have dramatically increased over the past 10 to 20 years.
Changing the bacteria in the gut could treat and prevent life-threatening allergies, according to research published in the…
About 40% of people produce smelly gas because of a certain bacteria in their bowels.
To understand why we fart, you need to know something about the volume of gases produced in the bowels first. Imagine how much space 25 litres of gas would occupy – about one third of the interior of a…