Drowsiness After Meals

What Causes Drowsiness After Eating?

Drowsiness after eating can have various causes, ranging in severity from 'troubling' to 'generally fatal'.  Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.

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Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms.  In order to diagnose drowsiness after eating, we could:

  • Research the topic
  • Find a doctor with the time
  • Use a diagnostic computer system.
The process is the same, whichever method is used.

Step 1: List all Possible Causes

We begin by identifying the disease conditions which have "drowsiness after eating" as a symptom.  Here are eight of many possibilities (more below):
  • Candida / Yeast
  • Diabetes II
  • Hypothyroidism
  • Stomach Acid Deficiency
  • Poor Small Intestine Health
  • A Sedentary Lifestyle
  • Gluten Sensitivity
  • Overconsumption

Step 2: Build a Symptom Checklist

We then identify all possible symptoms and risk factors of each possible cause, and check the ones that apply:
much reduced sense of smell
premenstrual weight gain
very deformed toenails
Latin / Hispanic ethnicity
severe afternoon/evening fatigue
meal-induced pain for 1-4 weeks
frequent unexplained vomiting
delayed gastric emptying
poor cold weather tolerance
very irregular menstrual cycles
minor mouth sores
severe vision disturbances
... and more than 130 others

Step 3: Rule Out or Confirm each Possible Cause

A differential diagnosis of your symptoms and risk factors finds the likely cause of drowsiness after eating:
Cause Probability Status
Overconsumption 93% Confirm
A Sedentary Lifestyle 27% Unlikely
Hypothyroidism 15% Unlikely
Stomach Acid Deficiency 4% Ruled out
Gluten Sensitivity 1% Ruled out
Poor Small Intestine Health 0% Ruled out
Diabetes II 0% Ruled out
Candida / Yeast 0% Ruled out
* This is a simple example to illustrate the process

Arriving at a Correct Diagnosis

The Analyst™ is our online diagnosis tool that learns all about you through a straightforward process of multi-level questioning, providing diagnosis at the end.

In the Sleep-Related Symptoms section of the questionnaire, The Analyst™ will ask the following question about drowsiness after meals:
How often do you become very tired within 1-3 hours of eating a meal?
Possible responses:
→ Never / rarely / don't know
→ Once a month or less
→ Once a week or less
→ A few times per week
→ At least daily
Based on your response to this question, which may indicate occasional postprandial somnolence, regular postprandial somnolence or frequent postprandial somnolence, The Analyst™ will consider possibilities such as:
Lack of Sleep

You are more likely to feel sleepy after a meal if you didn't get enough sleep the night before.

Problems Associated With A Sedentary Lifestyle

Exercise can keep you alert during the day and reduce the risk of post-meal tiredness.  Many studies agree that regular exercise helps increase overall energy and reduce fatigue.

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