Here's what most doctors never learned: chronic constipation after 55 isn't caused by lack of water, fiber, or "just getting older."
The real problem is simpler. And the solution much safer.
Your colon doesn't move waste on its own. It's not automatic. It's not like your heart beating.
It relies on a chemical signal called butyrate—produced by specific beneficial bacteria in your gut—to trigger peristalsis, the wave-like muscle contractions that push waste through your system.
Without that signal, your gut muscles literally don't know when to contract.
Think about it like this: Your gut muscles are like workers waiting for instructions.
They're standing there, ready to work. But if the foreman (butyrate) doesn't show up to tell them "START MOVING," they just... stand there. Doing nothing.
The bacteria that produce butyrate, specifically Bifidobacteria and Akkermansia, are the foreman.
And after age 55, they start dying off. Fast.
Here's why: