Final answer:
Persistent watery stool with fasting suggests secretory diarrhea, where the intestinal mucosa secretes excessive electrolytes and water. A blood test may show electrolyte imbalances or other issues, which can help in diagnosing the cause of this condition.
Step-by-step explanation:
If watery stool persists with fasting it is likely secretory diarrhea. Secretory diarrhea is a type of diarrhea in which the intestinal mucosa secretes electrolytes and water into the lumen of the gut, leading to watery feces. This can occur regardless of food intake and is not improved by fasting.
A blood test in someone with persistent chronic, watery diarrhea might reveal imbalances in electrolytes or other abnormalities. Moreover, if defecation is delayed, additional water is absorbed, making the feces firmer and potentially leading to constipation. Conversely, if waste matter moves too quickly through the intestines, not enough water is absorbed, resulting in diarrhea. Factors such as diet, health, and stress can influence bowel movements, and the frequency of movements varies greatly among individuals.