It usually takes about an hour after eating before your blood pressure can be measured.
Normally, blood pressure measurements are more accurate when taken in a quieter state and when factors that stimulate the sympathetic nerves are excluded. Eating causes an increase in sympathetic excitability and an increase in the release of catecholamine hormones, which can lead to an increase in blood pressure.
After a meal, food will be digested and absorbed into the bloodstream through the gastrointestinal tract, so the body’s blood is redistributed, causing more blood to be concentrated in the gastrointestinal tract, which can lead to a certain degree of error in the measurement of blood pressure. Therefore, it is better to wait for about 1 hour until the sympathetic excitability of the body decreases and the food is basically digested before measuring the blood pressure.
If the blood pressure is still high or low even if all other external factors are excluded, it is necessary to go to a regular hospital to find out the cause of the disease to avoid delays.