Examining the insights of the Donguibogam through the lens of modern science shows that age-related gut concerns cannot be reduced to a single cause.
First, the decrease in body fluids corresponds closely to declining fluid metabolism at the cellular level. As aging advances, cellular water-retention capacity diminishes, and intestinal mucosal cell function weakens. This reduces the lubricating ability of the intestinal barrier, serving as a primary reason stool turns hard and dry. Furthermore, hypofunction of the glycocalyx layer, which shields the intestinal mucosa and supports immunity, can be understood as a modern biological counterpart to fluid deficiency. This leaves the intestinal environment more vulnerable, adversely affecting overall gut health alongside constipation.
Second, the weakness of qi and blood aligns with neurological and muscular shifts governing intestinal motility. Intestinal peristalsis is regulated by the autonomic nervous system, yet aging disrupts autonomic nervous system balance. In particular, the secretion of neurotransmitters such as acetylcholine and serotonin by the vagus nerve and the enteric nervous system decreases, while nerve cell function itself declines, substantially lowering intestinal motility. In addition, the muscle mass and contractile strength of the smooth muscle surrounding the intestines diminish. This intestinal sarcopenia reduces the gut's propulsive force, extending transit time and prompting excessive water reabsorption that leaves stool increasingly firm.
Third, changes in the gut microbiota are another critical factor. With age, the proportion of beneficial bacteria falls while harmful bacteria multiply, worsening gut dysbiosis. This shift impacts the volume and consistency of stool formed during digestion and lowers the production of helpful compounds such as short-chain fatty acids that stimulate intestinal motility, further compounding constipation. In addition, medications frequently prescribed for chronic disease management, including antihypertensives, analgesics, and antidepressants, often carry side effects that slow intestinal motility or upset gut microbiota balance.
Because senile constipation stems from these multifaceted factors, an integrative approach aimed at improving whole-body metabolism and the intestinal environment is essential, rather than relying on short-term fixes solely to force evacuation. Adjusting dietary habits, engaging in appropriate exercise, maintaining adequate hydration, and pursuing personalized care through professional consultation when necessary are all meaningful steps.
