Helen Mulder OT

Multiple stressors together can worsen cognitive decline. An unhealthy gut (gut dysbiosis) is one of these stressors. We all have bacteria in our digestive tract, and they have an important job: fermenting fiber, supporting metabolism, and synthesizing vitamins before waste is passed outside the body. Some of these bacteria are known as “gram-negative” bacteria. These bacteria have a unique shield that protects them from dying in a stagnant, toxic gut. When these bacteria grow too large in population and eventually die, their abandoned shields leave behind a toxin called lipopolysaccharide (LPS).

Constipation (3-5 bowel movements a week) can lead to the overproduction of this gram-negative bacteria. An abundance of LPS toxins produced by the gram-negative bacteria can escape the gut and reach the circulatory system. In healthy individuals, this bacteria remains in the gut and any stragglers are taken care of by the immune system. But in a stressed, low energy body, these toxins can overwhelm the immune system and reach the brain. From there, these toxins can trigger a cell danger response (inflammation), which can worsen dementia symptoms.

In a healthy brain

1. Toxins arrive: Lipopolysaccharide (LPS) toxins reach the brain.
2. Immune Response: The brain begins a cell danger response and deploys amyloid peptides as a sticky “net” to trap and neutralize the toxins.
3. Cleanup: Brain microglia (the immune system’s janitor cells) digest the amyloid-trapped debris.
4. Restoration: Debris are flushed out via brain fluid during deep sleep.
5. Baseline: The brain returns to normal operations.

In a low energy brain

1. Toxins arrive: LPS toxins reach the brain.
2. Immune Response: The brain begins a cell danger response and deploys amyloid proteins as a sticky “net” to trap and neutralize the toxins.
3. Failure to Clean: Because the brain lacks energy, brain microglia (janitor cells) are too sluggish to digest the debris.
4. Accumulation: The trapped toxins and amyloid remain stagnant and build up in the brain, clumping together into plaques.
5. Chronic Loop: The cell danger response remains stuck in a chronic, damaging loop.

The bottom line

Gut dysbiosis can be a trigger for dementia symptoms in a stressed, low-energy system. Maintaining regular (1-2 daily) bowel movements significantly reduces the toxic burden on the immune system and brain, which can prevent the worsening of cognitive decline.

By keeping your gut healthy, you can give the brain a break from toxins, freeing up its resources for rest, repair, and daily activity.