Postprandial Hypotension: China 2025 Expert Consensus
Postprandial hypotension is a meal-related blood pressure drop that raises fall and stroke risk in older adults. Smaller meals and caution help prevent it.
What Is Postprandial Hypotension
Postprandial hypotension is a meal-related drop in blood pressure. It is a major cause of fainting, falls, and stroke risk in older adults.
It occurs in about a quarter to a third of healthy elderly and is more common with Parkinson disease and diabetes.
How It Is Diagnosed
It is diagnosed when systolic pressure falls at least 20 mmHg within two hours after eating, or drops to 90 mmHg or below, or causes symptoms.
Home or ambulatory blood pressure monitoring around meals captures the drop. Symptoms include dizziness, faintness, angina, or blurred vision.
Why It Happens
After eating, blood gathers in the gut to aid digestion, lowering return to the heart. Aging and nerve damage weaken the normal compensating response.
Gut hormones such as GLP-1 and high-carbohydrate meals worsen the fall. Hot foods and breakfast often trigger larger drops.
Who Is At Risk
Older age, low body weight, and high-carbohydrate or hot meals raise risk. High blood pressure, diabetes, Parkinson disease, and diuretics also contribute.
People on three or more medicines and those on dialysis are more vulnerable. Knowing the triggers helps prevent episodes.
Practical Management
Eat smaller, more frequent meals and reduce quickly absorbed carbohydrates. Avoiding very hot food and drinking water before the meal may help.
Stand up slowly and lie down if dizzy. Treating related conditions and reviewing medicines with a doctor are important steps.
